try and recreate the container from icewind

see:
https://icewind.nl/entry/gitea-actions-nix/#using-nix-to-build-our-nix-image

> Error: crun: cannot find `` in $PATH: No such file or directory: OCI
runtime attempted to invoke a command that was not found

.forgejo/workflows/cd.yaml

@@ -1,24 +0,0 @@
-name: deploy-infra
-
-on:
-  workflow_dispatch: # allows manual triggering
-  push:
-    branches:
-      - main
-
-jobs:
-  deploy:
-    runs-on: native
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up SSH key for age secrets and SSH
-        run: |
-          env
-          mkdir -p ~/.ssh
-          echo "${{ secrets.CD_SSH_KEY }}" > ~/.ssh/id_ed25519
-          chmod 600 ~/.ssh/id_ed25519
-
-      - name: Deploy
-        run: nix-shell --run 'eval "$(ssh-agent -s)" && ssh-add ~/.ssh/id_ed25519 && SHELL=$(which bash) nixops4 apply -v default'

.forgejo/workflows/ci.yaml

@@ -10,49 +10,57 @@ on:
 
 jobs:
   check-pre-commit:
-    runs-on: native
+    runs-on: docker
+    container:
+      image: icewind1991/nix-runner
     steps:
       - uses: actions/checkout@v4
       - run: nix-build -A tests
 
   check-data-model:
-    runs-on: native
+    runs-on: docker
+    container:
+      image: icewind1991/nix-runner
     steps:
       - uses: actions/checkout@v4
       - run: nix-shell --run 'nix-unit ./deployment/data-model-test.nix'
 
-  check-mastodon:
-    runs-on: native
-    steps:
-      - uses: actions/checkout@v4
-      - run: nix build .#checks.x86_64-linux.test-mastodon-service -L
-
   check-peertube:
-    runs-on: native
+    runs-on: docker
+    container:
+      image: icewind1991/nix-runner
     steps:
       - uses: actions/checkout@v4
-      - run: nix build .#checks.x86_64-linux.test-peertube-service -L
+      - run: nix-build services -A tests.peertube
 
   check-panel:
-    runs-on: native
+    runs-on: docker
+    container:
+      image: icewind1991/nix-runner
     steps:
       - uses: actions/checkout@v4
-      - run: nix-build -A tests.panel
+      - run: nix-build panel -A tests
 
   check-deployment-basic:
-    runs-on: native
+    runs-on: docker
+    container:
+      image: icewind1991/nix-runner
     steps:
       - uses: actions/checkout@v4
       - run: nix build .#checks.x86_64-linux.deployment-basic -L
 
   check-deployment-cli:
-    runs-on: native
+    runs-on: docker
+    container:
+      image: icewind1991/nix-runner
     steps:
       - uses: actions/checkout@v4
       - run: nix build .#checks.x86_64-linux.deployment-cli -L
 
   check-deployment-panel:
-    runs-on: native
+    runs-on: docker
+    container:
+      image: icewind1991/nix-runner
     steps:
       - uses: actions/checkout@v4
       - run: nix build .#checks.x86_64-linux.deployment-panel -L

.forgejo/workflows/update.yaml

@@ -8,16 +8,15 @@ on:
 
 jobs:
   lockfile:
-    runs-on: native
+    runs-on: nix
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
       - name: Update pins
         run: nix-shell --run "npins update"
       - name: Create PR
-        uses: https://github.com/KiaraGrouwstra/gitea-create-pull-request@f9f80aa5134bc5c03c38f5aaa95053492885b397
+        uses: peter-evans/create-pull-request@v7
         with:
-          remote-instance-api-version: v1
           token: "${{ secrets.DEPLOY_KEY }}"
           branch: npins-update
           commit-message: "npins: update sources"

default.nix

@@ -12,7 +12,6 @@ let
   inherit (pkgs) lib;
   inherit (import sources.flake-inputs) import-flake;
   inherit ((import-flake { src = ./.; }).inputs) nixops4;
-  panel = import ./panel { inherit sources system; };
   pre-commit-check =
     (import "${git-hooks}/nix" {
       inherit nixpkgs system;
@@ -72,7 +71,6 @@ in
 
   tests = {
     inherit pre-commit-check;
-    panel = panel.tests;
   };
 
   # re-export inputs so they can be overridden granularly

deployment/check/basic/constants.nix

@@ -1,8 +0,0 @@
-{
-  targetMachines = [
-    "hello"
-    "cowsay"
-  ];
-  pathToRoot = ../../..;
-  pathFromRoot = ./.;
-}

deployment/check/basic/default.nix

@@ -1,14 +0,0 @@
-{
-  runNixOSTest,
-  inputs,
-  sources,
-}:
-
-runNixOSTest {
-  imports = [
-    ../common/nixosTest.nix
-    ./nixosTest.nix
-  ];
-  _module.args = { inherit inputs sources; };
-  inherit (import ./constants.nix) targetMachines pathToRoot pathFromRoot;
-}

deployment/check/basic/deployment.nix

@@ -1,36 +0,0 @@
-{
-  inputs,
-  sources,
-  lib,
-  providers,
-  ...
-}:
-
-let
-  inherit (import ./constants.nix) targetMachines pathToRoot pathFromRoot;
-in
-
-{
-  providers = {
-    inherit (inputs.nixops4.modules.nixops4Provider) local;
-  };
-
-  resources = lib.genAttrs targetMachines (nodeName: {
-    type = providers.local.exec;
-
-    imports = [
-      inputs.nixops4-nixos.modules.nixops4Resource.nixos
-      ../common/targetResource.nix
-    ];
-
-    _module.args = { inherit inputs sources; };
-
-    inherit nodeName pathToRoot pathFromRoot;
-
-    nixos.module =
-      { pkgs, ... }:
-      {
-        environment.systemPackages = [ pkgs.${nodeName} ];
-      };
-  });
-}

deployment/check/basic/flake-part.nix

@@ -0,0 +1,57 @@
+{
+  self,
+  inputs,
+  lib,
+  sources,
+  ...
+}:
+
+let
+  inherit (lib) genAttrs;
+
+  targetMachines = [
+    "hello"
+    "cowsay"
+  ];
+  pathToRoot = /. + (builtins.unsafeDiscardStringContext self);
+  pathFromRoot = ./.;
+
+in
+{
+  _class = "flake";
+
+  perSystem =
+    { pkgs, ... }:
+    {
+      checks.deployment-basic = pkgs.testers.runNixOSTest {
+        imports = [
+          ../common/nixosTest.nix
+          ./nixosTest.nix
+        ];
+        _module.args = { inherit inputs sources; };
+        inherit targetMachines pathToRoot pathFromRoot;
+      };
+    };
+
+  nixops4Deployments.check-deployment-basic =
+    { providers, ... }:
+    {
+      providers = {
+        inherit (inputs.nixops4.modules.nixops4Provider) local;
+      };
+      resources = genAttrs targetMachines (nodeName: {
+        type = providers.local.exec;
+        imports = [
+          inputs.nixops4-nixos.modules.nixops4Resource.nixos
+          ../common/targetResource.nix
+        ];
+        _module.args = { inherit inputs sources; };
+        inherit nodeName pathToRoot pathFromRoot;
+        nixos.module =
+          { pkgs, ... }:
+          {
+            environment.systemPackages = [ pkgs.${nodeName} ];
+          };
+      });
+    };
+}

deployment/check/basic/flake-under-test.nix

@@ -1,22 +0,0 @@
-{
-  inputs = {
-    nixops4.follows = "nixops4-nixos/nixops4";
-    nixops4-nixos.url = "github:nixops4/nixops4-nixos";
-  };
-
-  outputs =
-    inputs:
-    import ./mkFlake.nix inputs (
-      { inputs, sources, ... }:
-      {
-        imports = [
-          inputs.nixops4.modules.flake.default
-        ];
-
-        nixops4Deployments.check-deployment-basic = {
-          imports = [ ./deployment/check/basic/deployment.nix ];
-          _module.args = { inherit inputs sources; };
-        };
-      }
-    );
-}

deployment/check/basic/nixosTest.nix

@@ -1,15 +1,10 @@
-{ inputs, lib, ... }:
+{ inputs, ... }:
 
 {
   _class = "nixosTest";
 
   name = "deployment-basic";
 
-  sourceFileset = lib.fileset.unions [
-    ./constants.nix
-    ./deployment.nix
-  ];
-
   nodes.deployer =
     { pkgs, ... }:
     {

deployment/check/cli/constants.nix

@@ -1,11 +0,0 @@
-{
-  targetMachines = [
-    "garage"
-    "mastodon"
-    "peertube"
-    "pixelfed"
-  ];
-  pathToRoot = ../../..;
-  pathFromRoot = ./.;
-  enableAcme = true;
-}

deployment/check/cli/default.nix

@@ -1,19 +0,0 @@
-{
-  runNixOSTest,
-  inputs,
-  sources,
-}:
-
-runNixOSTest {
-  imports = [
-    ../common/nixosTest.nix
-    ./nixosTest.nix
-  ];
-  _module.args = { inherit inputs sources; };
-  inherit (import ./constants.nix)
-    targetMachines
-    pathToRoot
-    pathFromRoot
-    enableAcme
-    ;
-}

deployment/check/cli/deployments.nix

@@ -1,59 +0,0 @@
-{
-  inputs,
-  sources,
-  lib,
-}:
-
-let
-  inherit (builtins) fromJSON readFile listToAttrs;
-  inherit (import ./constants.nix)
-    targetMachines
-    pathToRoot
-    pathFromRoot
-    enableAcme
-    ;
-
-  makeTargetResource = nodeName: {
-    imports = [ ../common/targetResource.nix ];
-    _module.args = { inherit inputs sources; };
-    inherit
-      nodeName
-      pathToRoot
-      pathFromRoot
-      enableAcme
-      ;
-  };
-
-  ## The deployment function - what we are here to test!
-  ##
-  ## TODO: Modularise `deployment/default.nix` to get rid of the nested
-  ## function calls.
-  makeTestDeployment =
-    args:
-    (import ../..)
-      {
-        inherit lib;
-        inherit (inputs) nixops4 nixops4-nixos;
-        fediversity = import ../../../services/fediversity;
-      }
-      (listToAttrs (
-        map (nodeName: {
-          name = "${nodeName}ConfigurationResource";
-          value = makeTargetResource nodeName;
-        }) targetMachines
-      ))
-      (fromJSON (readFile ../../configuration.sample.json) // args);
-
-in
-{
-  check-deployment-cli-nothing = makeTestDeployment { };
-
-  check-deployment-cli-mastodon-pixelfed = makeTestDeployment {
-    mastodon.enable = true;
-    pixelfed.enable = true;
-  };
-
-  check-deployment-cli-peertube = makeTestDeployment {
-    peertube.enable = true;
-  };
-}

deployment/check/cli/flake-part.nix

@@ -0,0 +1,90 @@
+{
+  self,
+  inputs,
+  lib,
+  sources,
+  ...
+}:
+
+let
+  inherit (builtins) fromJSON readFile listToAttrs;
+
+  targetMachines = [
+    "garage"
+    "mastodon"
+    "peertube"
+    "pixelfed"
+  ];
+  pathToRoot = /. + (builtins.unsafeDiscardStringContext self);
+  pathFromRoot = ./.;
+  enableAcme = true;
+
+in
+{
+  _class = "flake";
+
+  perSystem =
+    { pkgs, ... }:
+    {
+      checks.deployment-cli = pkgs.testers.runNixOSTest {
+        imports = [
+          ../common/nixosTest.nix
+          ./nixosTest.nix
+        ];
+        _module.args = { inherit inputs sources; };
+        inherit
+          targetMachines
+          pathToRoot
+          pathFromRoot
+          enableAcme
+          ;
+      };
+    };
+
+  nixops4Deployments =
+    let
+      makeTargetResource = nodeName: {
+        imports = [ ../common/targetResource.nix ];
+        _module.args = { inherit inputs sources; };
+        inherit
+          nodeName
+          pathToRoot
+          pathFromRoot
+          enableAcme
+          ;
+      };
+
+      ## The deployment function - what we are here to test!
+      ##
+      ## TODO: Modularise `deployment/default.nix` to get rid of the nested
+      ## function calls.
+      makeTestDeployment =
+        args:
+        (import ../..)
+          {
+            inherit lib;
+            inherit (inputs) nixops4 nixops4-nixos;
+            fediversity = import ../../../services/fediversity;
+          }
+          (listToAttrs (
+            map (nodeName: {
+              name = "${nodeName}ConfigurationResource";
+              value = makeTargetResource nodeName;
+            }) targetMachines
+          ))
+          (fromJSON (readFile ../../configuration.sample.json) // args);
+
+    in
+    {
+      check-deployment-cli-nothing = makeTestDeployment { };
+
+      check-deployment-cli-mastodon-pixelfed = makeTestDeployment {
+        mastodon.enable = true;
+        pixelfed.enable = true;
+      };
+
+      check-deployment-cli-peertube = makeTestDeployment {
+        peertube.enable = true;
+      };
+    };
+}

deployment/check/cli/flake-under-test.nix

@@ -1,26 +0,0 @@
-{
-  inputs = {
-    nixops4.follows = "nixops4-nixos/nixops4";
-    nixops4-nixos.url = "github:nixops4/nixops4-nixos";
-  };
-
-  outputs =
-    inputs:
-    import ./mkFlake.nix inputs (
-      {
-        inputs,
-        sources,
-        lib,
-        ...
-      }:
-      {
-        imports = [
-          inputs.nixops4.modules.flake.default
-        ];
-
-        nixops4Deployments = import ./deployment/check/cli/deployments.nix {
-          inherit inputs sources lib;
-        };
-      }
-    );
-}

deployment/check/cli/nixosTest.nix

@@ -1,9 +1,4 @@
-{
-  inputs,
-  hostPkgs,
-  lib,
-  ...
-}:
+{ inputs, hostPkgs, ... }:
 
 let
   ## Some places need a dummy file that will in fact never be used. We create
@@ -16,21 +11,6 @@ in
 
   name = "deployment-cli";
 
-  sourceFileset = lib.fileset.unions [
-    ./constants.nix
-    ./deployments.nix
-
-    # REVIEW: I would like to be able to grab all of `/deployment` minus
-    # `/deployment/check`, but I can't because there is a bunch of other files
-    # in `/deployment`. Maybe we can think of a reorg making things more robust
-    # here? (comment also in panel test)
-    ../../default.nix
-    ../../options.nix
-    ../../configuration.sample.json
-
-    ../../../services/fediversity
-  ];
-
   nodes.deployer =
     { pkgs, ... }:
     {

deployment/check/common/deployerNode.nix

@@ -54,13 +54,13 @@ in
 
     system.extraDependencies =
       [
-        inputs.nixops4
-        inputs.nixops4-nixos
-        inputs.nixpkgs
+        "${inputs.flake-parts}"
+        "${inputs.flake-parts.inputs.nixpkgs-lib}"
+        "${inputs.nixops4}"
+        "${inputs.nixops4-nixos}"
+        "${inputs.nixpkgs}"
 
-        sources.flake-parts
-        sources.flake-inputs
-        sources.git-hooks
+        "${sources.flake-inputs}"
 
         pkgs.stdenv
         pkgs.stdenvNoCC

deployment/check/common/nixosTest.nix

@@ -13,7 +13,6 @@ let
     toJSON
     ;
   inherit (lib)
-    types
     fileset
     mkOption
     genAttrs
@@ -28,6 +27,14 @@ let
 
   forConcat = xs: f: concatStringsSep "\n" (map f xs);
 
+  ## The whole repository, with the flake at its root.
+  ## FIXME: We could probably have fileset be the union of ./. with flake.nix
+  ## and flake.lock - I doubt we need anything else.
+  src = fileset.toSource {
+    fileset = config.pathToRoot;
+    root = config.pathToRoot;
+  };
+
   ## We will need to override some inputs by the empty flake, so we make one.
   emptyFlake = runCommandNoCC "empty-flake" { } ''
     mkdir $out
@@ -46,39 +53,9 @@ in
     ## FIXME: I wish I could just use `testScript` but with something like
     ## `mkOrder` to put this module's string before something else.
     extraTestScript = mkOption { };
-
-    sourceFileset = mkOption {
-      ## REVIEW: Upstream to nixpkgs?
-      type = types.mkOptionType {
-        name = "fileset";
-        description = "fileset";
-        descriptionClass = "noun";
-        check = (x: (builtins.tryEval (fileset.unions [ x ])).success);
-        merge = (_: defs: fileset.unions (map (x: x.value) defs));
-      };
-      description = ''
-        A fileset that will be copied to the deployer node in the current
-        working directory. This should contain all the files that are
-        necessary to run that particular test, such as the NixOS
-        modules necessary to evaluate a deployment.
-      '';
-    };
   };
 
   config = {
-    sourceFileset = fileset.unions [
-      # NOTE: not the flake itself; it will be overridden.
-      ../../../mkFlake.nix
-      ../../../flake.lock
-      ../../../npins
-
-      ./sharedOptions.nix
-      ./targetNode.nix
-      ./targetResource.nix
-
-      (config.pathToCwd + "/flake-under-test.nix")
-    ];
-
     acmeNodeIP = config.nodes.acme.networking.primaryIPAddress;
 
     nodes =
@@ -126,16 +103,8 @@ in
         ${n}.wait_for_unit("multi-user.target")
       '')}
 
-      ## A subset of the repository that is necessary for this test. It will be
-      ## copied inside the test. The smaller this set, the faster our CI, because we
-      ## won't need to re-run when things change outside of it.
       with subtest("Unpacking"):
-        deployer.succeed("cp -r --no-preserve=mode ${
-          fileset.toSource {
-            root = ../../..;
-            fileset = config.sourceFileset;
-          }
-        }/* .")
+        deployer.succeed("cp -r --no-preserve=mode ${src}/* .")
 
       with subtest("Configure the network"):
         ${forConcat config.targetMachines (
@@ -165,16 +134,11 @@ in
 
       ## NOTE: This is super slow. It could probably be optimised in Nix, for
       ## instance by allowing to grab things directly from the host's store.
-      ##
-      ## NOTE: We use the repository as-is (cf `src` above), overriding only
-      ## `flake.nix` by our `flake-under-test.nix`. We also override the flake
-      ## lock file to use locally available inputs, as we cannot download them.
-      ##
-      with subtest("Override the flake and its lock"):
-        deployer.succeed("cp ${config.pathFromRoot}/flake-under-test.nix flake.nix")
+      with subtest("Override the lock"):
         deployer.succeed("""
           nix flake lock --extra-experimental-features 'flakes nix-command' \
             --offline -v \
+            --override-input flake-parts ${inputs.flake-parts} \
             --override-input nixops4 ${inputs.nixops4.packages.${system}.flake-in-a-bottle} \
             \
             --override-input nixops4-nixos ${inputs.nixops4-nixos} \
@@ -186,6 +150,9 @@ in
               inputs.nixops4-nixos.inputs.nixops4.packages.${system}.flake-in-a-bottle
             } \
             --override-input nixops4-nixos/git-hooks-nix ${emptyFlake} \
+            \
+            --override-input nixpkgs ${inputs.nixpkgs} \
+            --override-input git-hooks ${inputs.git-hooks} \
             ;
         """)
 

deployment/check/panel/constants.nix

@@ -1,11 +0,0 @@
-{
-  targetMachines = [
-    "garage"
-    "mastodon"
-    "peertube"
-    "pixelfed"
-  ];
-  pathToRoot = ../../..;
-  pathFromRoot = ./.;
-  enableAcme = true;
-}

deployment/check/panel/default.nix

@@ -1,19 +0,0 @@
-{
-  runNixOSTest,
-  inputs,
-  sources,
-}:
-
-runNixOSTest {
-  imports = [
-    ../common/nixosTest.nix
-    ./nixosTest.nix
-  ];
-  _module.args = { inherit inputs sources; };
-  inherit (import ./constants.nix)
-    targetMachines
-    pathToRoot
-    pathFromRoot
-    enableAcme
-    ;
-}

deployment/check/panel/deployment.nix

@@ -1,58 +0,0 @@
-{
-  inputs,
-  sources,
-  lib,
-}:
-
-let
-  inherit (builtins) fromJSON listToAttrs;
-  inherit (import ./constants.nix)
-    targetMachines
-    pathToRoot
-    pathFromRoot
-    enableAcme
-    ;
-
-  makeTargetResource = nodeName: {
-    imports = [ ../common/targetResource.nix ];
-    _module.args = { inherit inputs sources; };
-    inherit
-      nodeName
-      pathToRoot
-      pathFromRoot
-      enableAcme
-      ;
-  };
-
-  ## The deployment function - what we are here to test!
-  ##
-  ## TODO: Modularise `deployment/default.nix` to get rid of the nested
-  ## function calls.
-  makeTestDeployment =
-    args:
-    (import ../..)
-      {
-        inherit lib;
-        inherit (inputs) nixops4 nixops4-nixos;
-        fediversity = import ../../../services/fediversity;
-      }
-      (listToAttrs (
-        map (nodeName: {
-          name = "${nodeName}ConfigurationResource";
-          value = makeTargetResource nodeName;
-        }) targetMachines
-      ))
-      args;
-
-in
-makeTestDeployment (
-  fromJSON (
-    let
-      env = builtins.getEnv "DEPLOYMENT";
-    in
-    if env == "" then
-      throw "The DEPLOYMENT environment needs to be set. You do not want to use this deployment unless in the `deployment-panel` NixOS test."
-    else
-      env
-  )
-)

deployment/check/panel/flake-part.nix

@@ -0,0 +1,94 @@
+{
+  self,
+  inputs,
+  lib,
+  sources,
+  ...
+}:
+
+let
+  inherit (builtins)
+    fromJSON
+    listToAttrs
+    ;
+
+  targetMachines = [
+    "garage"
+    "mastodon"
+    "peertube"
+    "pixelfed"
+  ];
+  pathToRoot = /. + (builtins.unsafeDiscardStringContext self);
+  pathFromRoot = ./.;
+  enableAcme = true;
+
+in
+{
+  _class = "flake";
+
+  perSystem =
+    { pkgs, ... }:
+    {
+      checks.deployment-panel = pkgs.testers.runNixOSTest {
+        imports = [
+          ../common/nixosTest.nix
+          ./nixosTest.nix
+        ];
+        _module.args = { inherit inputs sources; };
+        inherit
+          targetMachines
+          pathToRoot
+          pathFromRoot
+          enableAcme
+          ;
+      };
+    };
+
+  nixops4Deployments =
+    let
+      makeTargetResource = nodeName: {
+        imports = [ ../common/targetResource.nix ];
+        _module.args = { inherit inputs sources; };
+        inherit
+          nodeName
+          pathToRoot
+          pathFromRoot
+          enableAcme
+          ;
+      };
+
+      ## The deployment function - what we are here to test!
+      ##
+      ## TODO: Modularise `deployment/default.nix` to get rid of the nested
+      ## function calls.
+      makeTestDeployment =
+        args:
+        (import ../..)
+          {
+            inherit lib;
+            inherit (inputs) nixops4 nixops4-nixos;
+            fediversity = import ../../../services/fediversity;
+          }
+          (listToAttrs (
+            map (nodeName: {
+              name = "${nodeName}ConfigurationResource";
+              value = makeTargetResource nodeName;
+            }) targetMachines
+          ))
+          args;
+
+    in
+    {
+      check-deployment-panel = makeTestDeployment (
+        fromJSON (
+          let
+            env = builtins.getEnv "DEPLOYMENT";
+          in
+          if env == "" then
+            throw "The DEPLOYMENT environment needs to be set. You do not want to use this deployment unless in the `deployment-panel` NixOS test."
+          else
+            env
+        )
+      );
+    };
+}

deployment/check/panel/flake-under-test.nix

@@ -1,26 +0,0 @@
-{
-  inputs = {
-    nixops4.follows = "nixops4-nixos/nixops4";
-    nixops4-nixos.url = "github:nixops4/nixops4-nixos";
-  };
-
-  outputs =
-    inputs:
-    import ./mkFlake.nix inputs (
-      {
-        inputs,
-        sources,
-        lib,
-        ...
-      }:
-      {
-        imports = [
-          inputs.nixops4.modules.flake.default
-        ];
-
-        nixops4Deployments.check-deployment-panel = import ./deployment/check/panel/deployment.nix {
-          inherit inputs sources lib;
-        };
-      }
-    );
-}

deployment/check/panel/nixosTest.nix

@@ -125,20 +125,6 @@ in
 
   name = "deployment-panel";
 
-  sourceFileset = lib.fileset.unions [
-    ./constants.nix
-    ./deployment.nix
-
-    # REVIEW: I would like to be able to grab all of `/deployment` minus
-    # `/deployment/check`, but I can't because there is a bunch of other files
-    # in `/deployment`. Maybe we can think of a reorg making things more robust
-    # here? (comment also in CLI test)
-    ../../default.nix
-    ../../options.nix
-
-    ../../../services/fediversity
-  ];
-
   ## The panel's module sets `nixpkgs.overlays` which clashes with
   ## `pkgsReadOnly`. We disable it here.
   node.pkgsReadOnly = false;

deployment/data-model-test.nix

@@ -1,13 +1,9 @@
 let
-  inherit (import ../default.nix { }) pkgs inputs;
+  inherit (import ../default.nix { }) pkgs;
   inherit (pkgs) lib;
-  inherit (lib) mkOption;
   eval =
     module:
     (lib.evalModules {
-      specialArgs = {
-        inherit inputs;
-      };
       modules = [
         module
         ./data-model.nix
@@ -20,51 +16,32 @@ in
   test-eval = {
     expr =
       let
-        fediversity = eval (
-          { config, ... }:
-          {
-            config = {
-              applications.hello =
-                { ... }:
-                {
-                  description = ''Command-line tool that will print "Hello, world!" on the terminal'';
-                  module =
-                    { ... }:
-                    {
-                      options = {
-                        enable = lib.mkEnableOption "Hello in the shell";
-                      };
-                    };
-                  implementation =
-                    cfg:
-                    lib.optionalAttrs cfg.enable {
-                      dummy.login-shell.packages.hello = pkgs.hello;
-                    };
-                };
-            };
-            options = {
-              example-configuration = mkOption {
-                type = config.configuration;
-                readOnly = true;
-                default = {
-                  enable = true;
-                  applications.hello.enable = true;
-                };
+        example = eval {
+          runtime-environments.bar.nixos = {
+            module =
+              { ... }:
+              {
+                system.stateVersion = "25.05";
               };
-            };
-          }
-        );
+          };
+          applications.foo = {
+            module =
+              { pkgs, ... }:
+              {
+                environment.systemPackages = [
+                  pkgs.hello
+                ];
+              };
+          };
+        };
       in
       {
-        inherit (fediversity)
-          example-configuration
-          ;
+        has-runtime = lib.isAttrs example.runtime-environments.bar.nixos.module;
+        has-application = lib.isAttrs example.applications.foo.module;
       };
     expected = {
-      example-configuration = {
-        enable = true;
-        applications.hello.enable = true;
-      };
+      has-runtime = true;
+      has-application = true;
     };
   };
 }

deployment/data-model.nix

@@ -1,89 +1,45 @@
 {
   lib,
-  config,
   ...
 }:
 let
-  inherit (lib) mkOption types;
-  inherit (lib.types)
-    attrsOf
-    attrTag
-    deferredModuleWith
-    submodule
-    optionType
-    functionTo
-    ;
-
-  functionType = import ./function.nix;
-  application-resources = {
-    options.resources = mkOption {
-      # TODO: maybe transpose, and group the resources by type instead
-      type = attrsOf (
-        attrTag (lib.mapAttrs (_name: resource: mkOption { type = resource.request; }) config.resources)
-      );
-    };
-  };
+  inherit (lib) types mkOption;
 in
+with types;
 {
   _class = "nixops4Deployment";
 
   options = {
-    applications = mkOption {
-      description = "Collection of Fediversity applications";
-      type = attrsOf (
-        submodule (application: {
-          _class = "fediversity-application";
-          options = {
-            description = mkOption {
-              description = "Description to be shown in the application overview";
-              type = types.str;
-            };
-            module = mkOption {
-              description = "Operator-facing configuration options for the application";
-              type = deferredModuleWith { staticModules = [ { _class = "fediversity-application-config"; } ]; };
-            };
-            implementation = mkOption {
-              description = "Mapping of application configuration to deployment resources, a description of what an application needs to run";
-              type = application.config.config-mapping.function-type;
-            };
-            resources = mkOption {
-              description = "Compute resources required by an application";
-              type = functionTo application.config.config-mapping.output-type;
-              readOnly = true;
-              default = input: (application.config.implementation input).output;
-            };
-            config-mapping = mkOption {
-              description = "Function type for the mapping from application configuration to required resources";
-              type = submodule functionType;
-              readOnly = true;
-              default = {
-                input-type = application.config.module;
-                output-type = application-resources;
+    runtime-environments = mkOption {
+      description = "Collection of runtime environments into which applications can be deployed";
+      type = attrsOf (attrTag {
+        nixos = mkOption {
+          description = "A single NixOS machine";
+          type = submodule {
+            options = {
+              module = mkOption {
+                description = "The NixOS module describing the base configuration for that machine";
+                type = deferredModule;
               };
             };
           };
-        })
-      );
-    };
-    configuration = mkOption {
-      description = "Configuration type declaring options to be set by operators";
-      type = optionType;
-      readOnly = true;
-      default = submodule {
-        options = {
-          enable = lib.mkEnableOption {
-            description = "your Fediversity configuration";
-          };
-          applications = lib.mapAttrs (
-            _name: application:
-            mkOption {
-              description = application.description;
-              type = submodule application.module;
-              default = { };
-            }
-          ) config.applications;
         };
-      };
+      });
+    };
+    applications = mkOption {
+      description = "Collection of Fediversity applications";
+      type = attrsOf (submoduleWith {
+        modules = [
+          {
+            options = {
+              module = mkOption {
+                description = "The NixOS module for that application, for configuring that application";
+                type = deferredModule;
+              };
+            };
+          }
+        ];
+      });
     };
   };
 }

deployment/flake-part.nix

@@ -1,26 +1,9 @@
-{ inputs, sources, ... }:
-
 {
   _class = "flake";
 
-  perSystem =
-    { pkgs, ... }:
-    {
-      checks = {
-        deployment-basic = import ./check/basic {
-          inherit (pkgs.testers) runNixOSTest;
-          inherit inputs sources;
-        };
-
-        deployment-cli = import ./check/cli {
-          inherit (pkgs.testers) runNixOSTest;
-          inherit inputs sources;
-        };
-
-        deployment-panel = import ./check/panel {
-          inherit (pkgs.testers) runNixOSTest;
-          inherit inputs sources;
-        };
-      };
-    };
+  imports = [
+    ./check/basic/flake-part.nix
+    ./check/cli/flake-part.nix
+    ./check/panel/flake-part.nix
+  ];
 }

deployment/function.nix

@@ -1,37 +0,0 @@
-/**
-  Modular function type
-*/
-{ config, lib, ... }:
-let
-  inherit (lib) mkOption types;
-  inherit (types)
-    deferredModule
-    submodule
-    functionTo
-    optionType
-    ;
-in
-{
-  options = {
-    input-type = mkOption {
-      type = deferredModule;
-    };
-    output-type = mkOption {
-      type = deferredModule;
-    };
-    function-type = mkOption {
-      type = optionType;
-      readOnly = true;
-      default = functionTo (submodule {
-        options = {
-          input = mkOption {
-            type = submodule config.input-type;
-          };
-          output = mkOption {
-            type = submodule config.output-type;
-          };
-        };
-      });
-    };
-  };
-}

flake.lock

@@ -59,6 +59,22 @@
       }
     },
     "flake-compat_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_3": {
       "flake": false,
       "locked": {
         "lastModified": 1733328505,
@@ -74,7 +90,7 @@
         "type": "github"
       }
     },
-    "flake-compat_3": {
+    "flake-compat_4": {
       "flake": false,
       "locked": {
         "lastModified": 1696426674,
@@ -127,6 +143,24 @@
       }
     },
     "flake-parts_3": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib_3"
+      },
+      "locked": {
+        "lastModified": 1738453229,
+        "narHash": "sha256-7H9XgNiGLKN1G1CgRh0vUL4AheZSYzPm+zmZ7vxbJdo=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "32ea77a06711b758da0ad9bd6a844c5740a87abd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-parts_4": {
       "inputs": {
         "nixpkgs-lib": [
           "nixops4-nixos",
@@ -167,12 +201,32 @@
         "type": "github"
       }
     },
-    "git-hooks-nix": {
+    "git-hooks": {
       "inputs": {
         "flake-compat": "flake-compat",
         "gitignore": "gitignore",
         "nixpkgs": "nixpkgs"
       },
+      "locked": {
+        "lastModified": 1742649964,
+        "narHash": "sha256-DwOTp7nvfi8mRfuL1escHDXabVXFGT1VlPD1JHrtrco=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "dcf5072734cb576d2b0c59b2ac44f5050b5eac82",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "git-hooks-nix": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "gitignore": "gitignore_2",
+        "nixpkgs": "nixpkgs_2"
+      },
       "locked": {
         "lastModified": 1737465171,
         "narHash": "sha256-R10v2hoJRLq8jcL4syVFag7nIGE7m13qO48wRIukWNg=",
@@ -227,6 +281,27 @@
       }
     },
     "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "git-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "gitignore_2": {
       "inputs": {
         "nixpkgs": [
           "nixops4-nixos",
@@ -266,8 +341,8 @@
     },
     "nix": {
       "inputs": {
-        "flake-compat": "flake-compat_2",
-        "flake-parts": "flake-parts_3",
+        "flake-compat": "flake-compat_3",
+        "flake-parts": "flake-parts_4",
         "git-hooks-nix": "git-hooks-nix_2",
         "nixfmt": "nixfmt",
         "nixpkgs": [
@@ -341,10 +416,10 @@
     },
     "nixops4": {
       "inputs": {
-        "flake-parts": "flake-parts_2",
+        "flake-parts": "flake-parts_3",
         "nix": "nix",
         "nix-cargo-integration": "nix-cargo-integration",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs_3",
         "nixpkgs-old": "nixpkgs-old"
       },
       "locked": {
@@ -363,7 +438,7 @@
     },
     "nixops4-nixos": {
       "inputs": {
-        "flake-parts": "flake-parts",
+        "flake-parts": "flake-parts_2",
         "git-hooks-nix": "git-hooks-nix",
         "nixops4": "nixops4",
         "nixops4-nixos": [
@@ -445,6 +520,18 @@
         "url": "https://github.com/NixOS/nixpkgs/archive/072a6db25e947df2f31aab9eccd0ab75d5b2da11.tar.gz"
       }
     },
+    "nixpkgs-lib_3": {
+      "locked": {
+        "lastModified": 1738452942,
+        "narHash": "sha256-vJzFZGaCpnmo7I6i416HaBLpC+hvcURh/BQwROcGIp8=",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/072a6db25e947df2f31aab9eccd0ab75d5b2da11.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/072a6db25e947df2f31aab9eccd0ab75d5b2da11.tar.gz"
+      }
+    },
     "nixpkgs-old": {
       "locked": {
         "lastModified": 1735563628,
@@ -478,6 +565,22 @@
       }
     },
     "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1730768919,
+        "narHash": "sha256-8AKquNnnSaJRXZxc5YmF/WfmxiHX6MMZZasRP6RRQkE=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "a04d33c0c3f1a59a2c1cb0c6e34cd24500e5a1dc",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
       "locked": {
         "lastModified": 1738410390,
         "narHash": "sha256-xvTo0Aw0+veek7hvEVLzErmJyQkEcRk6PSR4zsRQFEc=",
@@ -518,7 +621,7 @@
     },
     "purescript-overlay": {
       "inputs": {
-        "flake-compat": "flake-compat_3",
+        "flake-compat": "flake-compat_4",
         "nixpkgs": [
           "nixops4-nixos",
           "nixops4",
@@ -561,6 +664,8 @@
     },
     "root": {
       "inputs": {
+        "flake-parts": "flake-parts",
+        "git-hooks": "git-hooks",
         "nixops4": [
           "nixops4-nixos",
           "nixops4"

flake.nix

@@ -1,52 +1,83 @@
 {
   inputs = {
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    git-hooks.url = "github:cachix/git-hooks.nix";
     nixops4.follows = "nixops4-nixos/nixops4";
     nixops4-nixos.url = "github:nixops4/nixops4-nixos";
   };
 
   outputs =
-    inputs:
-    import ./mkFlake.nix inputs (
-      { inputs, sources, ... }:
+    inputs@{ self, flake-parts, ... }:
+    let
+      sources = import ./npins;
+      inherit (import sources.flake-inputs) import-flake;
+      inherit (sources) git-hooks;
+      # XXX(@fricklerhandwerk): this atrocity is required to splice in a foreign Nixpkgs via flake-parts
+      # XXX - this is just importing a flake
+      nixpkgs = import-flake { src = sources.nixpkgs; };
+      # XXX - this overrides the inputs attached to `self`
+      inputs' = self.inputs // {
+        nixpkgs = nixpkgs;
+      };
+      self' = self // {
+        inputs = inputs';
+      };
+    in
+    # XXX - finally we override the overall set of `inputs` -- we need both:
+    #       `flake-parts obtains `nixpkgs` from `self.inputs` and not from `inputs`.
+    flake-parts.lib.mkFlake
       {
-        imports = [
-          "${sources.git-hooks}/flake-module.nix"
-          inputs.nixops4.modules.flake.default
-
-          ./deployment/flake-part.nix
-          ./infra/flake-part.nix
-          ./keys/flake-part.nix
-          ./secrets/flake-part.nix
-          ./services/tests/flake-part.nix
-        ];
-
-        perSystem =
-          {
-            pkgs,
-            lib,
-            system,
-            ...
-          }:
-          {
-            checks = {
-              panel = (import ./. { inherit sources system; }).tests.panel.basic;
-            };
-            formatter = pkgs.nixfmt-rfc-style;
-
-            pre-commit.settings.hooks =
-              let
-                ## Add a directory here if pre-commit hooks shouldn't apply to it.
-                optout = [ "npins" ];
-                excludes = map (dir: "^${dir}/") optout;
-                addExcludes = lib.mapAttrs (_: c: c // { inherit excludes; });
-              in
-              addExcludes {
-                nixfmt-rfc-style.enable = true;
-                deadnix.enable = true;
-                trim-trailing-whitespace.enable = true;
-                shellcheck.enable = true;
-              };
-          };
+        inputs = inputs // {
+          inherit nixpkgs;
+        };
+        self = self';
+        specialArgs = {
+          inherit sources;
+        };
       }
-    );
+      (
+        { inputs, ... }:
+        {
+          systems = [
+            "x86_64-linux"
+            "aarch64-linux"
+            "x86_64-darwin"
+            "aarch64-darwin"
+          ];
+
+          imports = [
+            "${git-hooks}/flake-module.nix"
+            inputs.nixops4.modules.flake.default
+
+            ./deployment/flake-part.nix
+            ./infra/flake-part.nix
+            ./keys/flake-part.nix
+            ./secrets/flake-part.nix
+          ];
+
+          perSystem =
+            {
+              pkgs,
+              lib,
+              ...
+            }:
+            {
+              formatter = pkgs.nixfmt-rfc-style;
+
+              pre-commit.settings.hooks =
+                let
+                  ## Add a directory here if pre-commit hooks shouldn't apply to it.
+                  optout = [ "npins" ];
+                  excludes = map (dir: "^${dir}/") optout;
+                  addExcludes = lib.mapAttrs (_: c: c // { inherit excludes; });
+                in
+                addExcludes {
+                  nixfmt-rfc-style.enable = true;
+                  deadnix.enable = true;
+                  trim-trailing-whitespace.enable = true;
+                  shellcheck.enable = true;
+                };
+            };
+        }
+      );
 }

infra/README.md

@@ -1,13 +1,14 @@
 # Infra
 
-This directory contains the definition of [the VMs](../machines/machines.md) that host our
+This directory contains the definition of [the VMs](machines.md) that host our
 infrastructure.
 
 ## Provisioning VMs with an initial configuration
 
-> NOTE[Niols]: This is still very manual and clunky. Two things will happen:
-> 1. In the near future, I will improve the provisioning script to make this a bit less clunky.
-> 2. In the far future, NixOps4 will be able to communicate with Proxmox directly and everything will become much cleaner.
+NOTE[Niols]: This is very manual and clunky. Two things will happen. In the near
+future, I will improve the provisioning script to make this a bit less clunky.
+In the far future, NixOps4 will be able to communicate with Proxmox directly and
+everything will become much cleaner.
 
 1. Choose names for your VMs. It is recommended to choose `fediXXX`, with `XXX`
    above 100. For instance, `fedi117`.
@@ -24,7 +25,8 @@ infrastructure.
    Those files need to exist during provisioning, but their content matters only
    when updating the machines' configuration.
 
-   > FIXME: Remove this step by making the provisioning script not fail with the public key does not exist yet.
+   FIXME: Remove this step by making the provisioning script not fail with the
+   public key does not exist yet.
 
 3. Run the provisioning script:
    ```
@@ -42,7 +44,7 @@ infrastructure.
    ssh fedi117.abundos.eu 'sudo cat /etc/ssh/ssh_host_ed25519_key.pub' > keys/systems/fedi117.pub
    ```
 
-   > FIXME: Make the provisioning script do that for us.
+   FIXME: Make the provisioning script do that for us.
 
 7. Regenerate the list of machines:
    ```
@@ -54,7 +56,7 @@ infrastructure.
    just enough for it to boot and be reachable. Go on to the next section to
    update the machine and put an actual configuration.
 
-   > FIXME: Figure out why the full configuration isn't on the machine at this
+   FIXME: Figure out why the full configuration isn't on the machine at this
    point and fix it.
 
 ## Updating existing VM configurations

infra/common/nixos/users.nix

@@ -1,13 +1,7 @@
-{
-  config,
-  ...
-}:
 {
   _class = "nixos";
 
   users.users = {
-    root.openssh.authorizedKeys.keys = config.users.users.procolix.openssh.authorizedKeys.keys;
-
     procolix = {
       isNormalUser = true;
       extraGroups = [ "wheel" ];

infra/common/proxmox-qemu-vm.nix

@@ -1,10 +1,9 @@
-{ sources, ... }:
+{ modulesPath, ... }:
+
 {
   _class = "nixos";
 
-  imports = [
-    "${sources.nixpkgs}/nixos/modules/profiles/qemu-guest.nix"
-  ];
+  imports = [ (modulesPath + "/profiles/qemu-guest.nix") ];
 
   boot = {
     initrd = {

infra/common/resource.nix

@@ -48,9 +48,9 @@ in
     ## the secret's file.
     age.secrets = concatMapAttrs (
       name: secret:
-      optionalAttrs (elem config.fediversityVm.hostPublicKey secret.publicKeys) {
+      optionalAttrs (elem config.fediversityVm.hostPublicKey secret.publicKeys) ({
         ${removeSuffix ".age" name}.file = secrets.rootPath + "/${name}";
-      }
+      })
     ) secrets.mapping;
 
     ## FIXME: Remove direct root authentication once the NixOps4 NixOS provider
@@ -58,8 +58,6 @@ in
     users.users.root.openssh.authorizedKeys.keys = attrValues keys.contributors ++ [
       # allow our panel vm access to the test machines
       keys.panel
-      # allow continuous deployment access
-      keys.cd
     ];
 
   };

infra/flake-part.nix

@@ -27,19 +27,12 @@ let
       _module.args = {
         inherit
           inputs
+          sources
           keys
           secrets
           ;
       };
 
-      nixos.module.imports = [
-        ./common/proxmox-qemu-vm.nix
-      ];
-
-      nixos.specialArgs = {
-        inherit sources;
-      };
-
       imports =
         [
           ./common/resource.nix
@@ -47,6 +40,7 @@ let
         ++ (
           if isTestVm then
             [
+              ./common/proxmox-qemu-vm.nix
               ../machines/operator/${vmName}
               {
                 nixos.module.users.users.root.openssh.authorizedKeys.keys = [
@@ -69,33 +63,17 @@ let
     vmNames:
     { providers, ... }:
     {
-      # XXX: this type merge is for adding `specialArgs` to resource modules
-      options.resources = mkOption {
-        type =
-          with lib.types;
-          lazyAttrsOf (submoduleWith {
-            class = "nixops4Resource";
-            modules = [ ];
-            # TODO(@fricklerhandwerk): we may want to pass through all of `specialArgs`
-            # once we're sure it's sane. leaving it here for better control during refactoring.
-            specialArgs = {
-              inherit sources;
-            };
-          });
-      };
-      config = {
-        providers.local = inputs.nixops4.modules.nixops4Provider.local;
-        resources = genAttrs vmNames (vmName: {
-          type = providers.local.exec;
-          imports = [
-            inputs.nixops4-nixos.modules.nixops4Resource.nixos
-            (makeResourceModule {
-              inherit vmName;
-              isTestVm = false;
-            })
-          ];
-        });
-      };
+      providers.local = inputs.nixops4.modules.nixops4Provider.local;
+      resources = genAttrs vmNames (vmName: {
+        type = providers.local.exec;
+        imports = [
+          inputs.nixops4-nixos.modules.nixops4Resource.nixos
+          (makeResourceModule {
+            inherit vmName;
+            isTestVm = false;
+          })
+        ];
+      });
     };
   makeDeployment' = vmName: makeDeployment [ vmName ];
 

infra/makeInstallerIso.nix

@@ -15,6 +15,7 @@ let
 
   installer =
     {
+      config,
       pkgs,
       lib,
       ...

keys/cd-ssh-key.pub

@@ -1 +0,0 @@
-ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMlsYTtMx3hFO8B5B8iHaXL2JKj9izHeC+/AMhIWXBPs cd-age

keys/default.nix

@@ -35,5 +35,4 @@ in
   contributors = collectKeys ./contributors;
   systems = collectKeys ./systems;
   panel = removeTrailingWhitespace (readFile ./panel-ssh-key.pub);
-  cd = removeTrailingWhitespace (readFile ./cd-ssh-key.pub);
 }

machines/dev/fedi201/fedipanel.nix

@@ -11,7 +11,7 @@ in
 
   imports = [
     (import ../../../panel { }).module
-    "${sources.home-manager}/nixos"
+    (import "${sources.home-manager}/nixos")
   ];
 
   security.acme = {

machines/dev/forgejo-ci/default.nix

@@ -48,7 +48,7 @@ in
       };
 
       ## NOTE: This is a physical machine, so is not covered by disko
-      fileSystems."/" = lib.mkForce {
+      fileSystems."/" = {
         device = "rpool/root";
         fsType = "zfs";
       };
@@ -58,7 +58,7 @@ in
         fsType = "zfs";
       };
 
-      fileSystems."/boot" = lib.mkForce {
+      fileSystems."/boot" = {
         device = "/dev/disk/by-uuid/50B2-DD3F";
         fsType = "vfat";
         options = [

machines/dev/forgejo-ci/forgejo-actions-runner.nix

@@ -1,4 +1,12 @@
-{ pkgs, config, ... }:
+{
+  pkgs,
+  config,
+  # sources,
+  ...
+}:
+let
+  sources = import ../../../npins;
+in
 
 {
   _class = "nixos";
@@ -44,4 +52,53 @@
 
   ## For the Docker mode of the runner.
   virtualisation.docker.enable = true;
+  virtualisation.oci-containers.containers."buildResult" =
+    let
+      name = "nix-runner";
+      tag = "latest";
+      base = import (sources.nix + "/docker.nix") {
+        inherit pkgs;
+        name = "nix-ci-base";
+        maxLayers = 10;
+        extraPkgs = with pkgs; [
+          nodejs_20 # nodejs is needed for running most 3rdparty actions
+          # add any other pre-installed packages here
+        ];
+        # change this is you want
+        channelURL = "https://nixos.org/channels/nixpkgs-23.05";
+        nixConf = {
+          substituters = [
+            "https://cache.nixos.org/"
+            "https://nix-community.cachix.org"
+            # insert any other binary caches here
+          ];
+          trusted-public-keys = [
+            "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+            "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+            # insert the public keys for those binary caches here
+          ];
+          # allow using the new flake commands in our workflows
+          experimental-features = [
+            "nix-command"
+            "flakes"
+          ];
+        };
+      };
+    in
+    {
+      devices = [ "/dev/kvm:/dev/kvm" ];
+      image = "${name}:${tag}";
+      # https://icewind.nl/entry/gitea-actions-nix/
+      imageFile = pkgs.dockerTools.buildImage {
+        inherit name tag;
+        fromImage = base;
+        fromImageName = null;
+        fromImageTag = "latest";
+        copyToRoot = pkgs.buildEnv {
+          name = "image-root";
+          paths = [ pkgs.coreutils-full ];
+          pathsToLink = [ "/bin" ]; # add coreutils (which includes sleep) to /bin
+        };
+      };
+    };
 }

mkFlake.nix

@@ -1,54 +0,0 @@
-## This file contains a tweak of flake-parts's `mkFlake` function to splice in
-## sources taken from npins.
-
-## NOTE: Much of the logic in this file feels like it should be not super
-## specific to fediversity. Could it make sense to extract the core of this to
-## another place it feels closer to in spirit, such as @fricklerhandwerk's
-## flake-inputs (which this code already depends on anyway, and which already
-## contained two distinct helpers for migrating away from flakes)? cf
-## https://git.fediversity.eu/Fediversity/Fediversity/pulls/447#issuecomment-8671
-
-inputs@{ self, ... }:
-
-let
-  sources = import ./npins;
-  inherit (import sources.flake-inputs) import-flake;
-
-  # XXX(@fricklerhandwerk): this atrocity is required to splice in a foreign Nixpkgs via flake-parts
-  # XXX - this is just importing a flake
-  nixpkgs = import-flake { src = sources.nixpkgs; };
-
-  # XXX - this overrides the inputs attached to `self`
-  inputs' = self.inputs // {
-    nixpkgs = nixpkgs;
-  };
-  self' = self // {
-    inputs = inputs';
-  };
-
-  flake-parts-lib = import "${sources.flake-parts}/lib.nix" { inherit (nixpkgs) lib; };
-in
-
-flakeModule:
-
-flake-parts-lib.mkFlake
-  {
-    # XXX - finally we override the overall set of `inputs` -- we need both:
-    #       `flake-parts obtains `nixpkgs` from `self.inputs` and not from `inputs`.
-    inputs = inputs // {
-      inherit nixpkgs;
-    };
-    self = self';
-    specialArgs = {
-      inherit sources;
-    };
-  }
-  {
-    systems = [
-      "x86_64-linux"
-      "aarch64-linux"
-      "x86_64-darwin"
-      "aarch64-darwin"
-    ];
-    imports = [ flakeModule ];
-  }

npins/sources.json

@@ -125,6 +125,22 @@
       "url": "https://api.github.com/repos/bigskysoftware/htmx/tarball/v2.0.4",
       "hash": "1c4zm3b7ym01ijydiss4amd14mv5fbgp1n71vqjk4alc35jlnqy2"
     },
+    "nix": {
+      "type": "GitRelease",
+      "repository": {
+        "type": "GitHub",
+        "owner": "nixos",
+        "repo": "nix"
+      },
+      "pre_releases": false,
+      "version_upper_bound": null,
+      "release_prefix": null,
+      "submodules": false,
+      "version": "2.29.1",
+      "revision": "82debf3b591578eb2e7b151d2589626fad1679a2",
+      "url": "https://api.github.com/repos/nixos/nix/tarball/2.29.1",
+      "hash": "1xj5wawjw99qsyqfm3x02aydcg39rjksphnqg163plknifbzf8mc"
+    },
     "nix-unit": {
       "type": "Git",
       "repository": {

panel/default.nix

@@ -45,7 +45,7 @@ in
     '';
   };
 
-  module = ./nix/configuration.nix;
+  module = import ./nix/configuration.nix;
   tests = pkgs.callPackage ./nix/tests.nix { };
 
   # re-export inputs so they can be overridden granularly

panel/nix/configuration.nix

@@ -202,8 +202,11 @@ in
       };
     };
 
-    # needed to place a config file with home-manager
-    users.users.${name}.isNormalUser = true;
+    users.users.${name} = {
+      # TODO[Niols]: change to system user or document why we specifically
+      # need a normal user.
+      isNormalUser = true;
+    };
 
     users.groups.${name} = { };
     systemd.services.${name} = {

secrets/forgejo-database-password.age

@@ -1,19 +1,17 @@
 age-encryption.org/v1
--> ssh-ed25519 Jpc21A bBCQmvfRUwJuIXbpVJ092XUBVszGrb6gILGbgV9j9BY
-7DEGwhqdfqMs5cxXtlMkSTPjw4qhczBgW0dmoJ6dh6g
--> ssh-ed25519 BAs8QA oiVedFC6UklEFCJUybGr93+XrddyCtV4r4TnE4nhpWI
-xasnkP4NCl9TuYSE1u0Xi0b/PiwcrfHCz2QMnpTjLcU
--> ssh-ed25519 ofQnlg LrMcWdaEUVyIgd/KznwJW/2sucIu5MuxDEcEJAmf8mA
-p6pQoisuXre2J4r6ArV6C6lKO2J/aNdBFhqLPBoZ2wA
--> ssh-ed25519 COspvA q2OGeVofPKyGCpr4Mf9VoaRvZCWTRl8n2mvkQOdTnyQ
-M+ffAGecJG/94k/Z5DdokltrZppS2IcxkZa8JKHwIMs
--> ssh-ed25519 2XrTgw Bsz/G4QderToPSfMKOR6s5yWb0xCGUlsjGJxJYQNBRc
-JYrXZb8qj1Yi9u5bnI/WzuNxy7gyFLCTIUaGNmcOYnk
--> ssh-ed25519 awJeHA KKJMQSt0PvC6P+T/kxQv96tSBdLQLiY2f8q35IwGm28
-p7Cf2HLlPl0qmsO6Hh5zwVgKkEs3A6fdSBndMKsacbk
--> ssh-ed25519 Fa25Dw 3m/qyannP4gjXxkUuO0LQRU8Z8HXOg4WReMDd7786y8
-dNMyiBGeJDrBScE9TEyZZ7+MGMG6FLuoRTK82EVeX1w
--> ssh-ed25519 i+ecmQ oCs4Ep2K75yjmUOh1ox4F25tGq+O/mZ2/c2E8+IRlEc
-0Wc9gDxhvHK5tEVM5kJ0mQXc3kp7tJ2JNHg54N0+tJ8
---- mXrqbcHxjjkS5MrQaCVm4hTsAUEENAWlIYtiYx6rtas
-ž`€úì}öÙ7Ù>­iŒbàéëÕè/&ɪŠwŽ„ì7àí[ã±Hˆc“
+-> ssh-ed25519 Jpc21A 9edPaA2tT4SeYNTPzF0E157daC2o+JH/WQQCT+vLbFg
+C48EtLdhB75TTzfEZTw1DypicHiVlSmFzjfbqfO9N/8
+-> ssh-ed25519 BAs8QA T+kXpZg1v0XRkub5DWir7vYwO7KaOJLZBNYxxXiBUCw
+zBRwMTDpyI7twEwUGsmJYyYPw9btBx5Kakj1yT+XY8U
+-> ssh-ed25519 ofQnlg 4UoEDY/tdKz8LrX1BkBU1/cn+vSaYLUl7xX9YmzANBY
+8CACq1n3AJgD9IyPN23iRvThqsfQFF5+jmkKnhun24U
+-> ssh-ed25519 COspvA HxcbkqHL+LpVmwb+Fo5JuUU+C+Pxzdxtb0yZHixwuzM
+7FIhxdbjHJlgQQgjrHHUK5cecqs5aT7X3I8TWf8c2gc
+-> ssh-ed25519 2XrTgw R6Ia8MVIZKPnNZ0rspZ34EqoY8fOLeB9H7vnvNBLg1g
+55NUqz5Yygt6FKJ3bR5iHxQp8G7S2gyFwrJNX1Pb/2Y
+-> ssh-ed25519 awJeHA hJdTuAScoewVMt7HWiisSkL0zSeClFzYzzKL84G893o
+ou780VLrW1s4d6L+lEVu3kXaGn4dvtFPA31supwEL50
+-> ssh-ed25519 Fa25Dw mJcqnXA3fQeoKrG7RJ7nVeLxPvrxqbj+lJdx6jQ9IR8
+f5Q7mrQSSDsm1Z/uSAnvx66mgnRC3XaBLQrVL9f/Ijs
+--- W/KmboXTLV12X6WtVQKHNe+ZHvS2q9EHUZwofSgJSE8
+^kûÚ	h©0ÔkÇ ¢¸_Ç·ûQÞm‘’7\òÖ}÷Áë?½qø‚<ÿm

secrets/secrets.nix

@@ -7,12 +7,11 @@ let
 
   keys = import ../keys;
   contributors = attrValues keys.contributors;
-  cd = [ keys.cd ];
 in
 
 concatMapAttrs
   (name: systems: {
-    "${name}.age".publicKeys = contributors ++ systems ++ cd;
+    "${name}.age".publicKeys = contributors ++ systems;
   })
 
   (

secrets/wiki-basicauth-htpasswd.age

@@ -1,19 +1,18 @@
 age-encryption.org/v1
--> ssh-ed25519 Jpc21A NStZFZPTHMhVCnQ5Zkbl39vWztrxfsSXok24/e8H7QQ
-JjHP6Cus76PGYYxpbnc2cSZ79zvdD8LISYDPbvXsnqU
--> ssh-ed25519 BAs8QA iocHfHjWlEUsbtibqEbYDceAqURr2vjxuYapqon9hyU
-ljL+olZdhWtHeV3uh3pOu22+sY13wPn2vKQDduPSqVs
--> ssh-ed25519 ofQnlg 9YVfMKyoP3+xtzg/ok2I9yf3YdIYoBpUJa/3d2N/8lI
-2yUalyj7O3c1YDA2xTb9QNYrFBDHwcyGBX3mydv0ifI
--> ssh-ed25519 COspvA cOSNsZXBbhQ/B49fq3KwcY6siVrTz48doTrta/0d/Hw
-jcRtVxA/tVFM9btPAPI6zKk8BwAVlaQlvHC203MpmIQ
--> ssh-ed25519 2XrTgw d3EKtYkxjeJZ8kt3ofIklGmRwUCgTIB/WVVlvxggGRk
-IhcrpWN9xFsKRw9iCfYMONPOU7TpTt4kTBNwMDtk7zo
--> ssh-ed25519 awJeHA Ei64e3+FJDM6S8NP+YfEWEg9t72qTXZ0IdZE8dYQPm4
-ggRc86sXin06eXJkLbK8CdJFDa1237WMfSgwNd5ngmM
--> ssh-ed25519 dgBsjw 9etK6tNrFlWVAKTz5U0TitkiGYLKTad3QiRWVpLPrwM
-xHLzFnRtcvpVZYZrxWz5q4uadhHrHVlfqjteOWfIccE
--> ssh-ed25519 i+ecmQ SDTnYBLMOaH173B/wqaOifE6a90gSesRqMHmX7/iZFk
-kS9tuKnMXCXNUnoZ06DisOOyZHe/mZl4a0JRA+eynE8
---- C0R5WxDDCqQGxyvFoeNX838az0bjp55PGh//1NFG4LE
-ŠÉY—±³<EFBFBD>„ÏKRÇËej±éŒ7xÑíE¹ Óì¾7jÏ
-œJý«[ÀF?Ÿ=-w‘XMC~)èÅ›ƒ<E280BA>Éõb«ëƒCÜ4ÌÖÞOwý~–¿š8ñv—ÙÜžèX»ØÆ’ƒí!5¦
+-> ssh-ed25519 Jpc21A EuMYAiZX+4A12eu19mIY7u+WYF7NJ9qJosQSVlxR6n8
+bK5CMXAmP23t1p9bgmqoVg4Qcu2qYKGc4t36v8e9eow
+-> ssh-ed25519 BAs8QA IwRyitDNTzUPzQAUbDNEKjFiF8WPD/OyztOZQeoTEzw
+OwiTWvk4NmUgExav0uH6HlThDNU5hsKXfR6KHsFOV3I
+-> ssh-ed25519 ofQnlg 3TcMbLX1JsQL8+Gqy7IFZwykZr2BspvPCuZT1SHtnQQ
+Ci5OeBj2aiC8ut9jIEUMt3qfYH+cJrnVud6AH54Ndn8
+-> ssh-ed25519 COspvA 0t9f3Wu3ILv4QTJhwT619y+7XFrryCLbpIZC6aE+qQI
+oPQP48F6oO/tkqLZDdjkGtIap7KHiAknbpTNL6/yLaU
+-> ssh-ed25519 2XrTgw YOZsaYQH9vMH0QqSXGh8GyhRV4MbcBGPFfFaKpo3Ckk
+kUShJbADA+6bpx2adxvzlI/0jSM5bIBfZfdSE/7Vm5Y
+-> ssh-ed25519 awJeHA dF3m0hQWX9c0EezDr56Kt/F4d1Uim7NwvIX6zRws0Eo
+pst243yrARODwrnyz8cJAzgDxdPOUsRbs7yPZePABFs
+-> ssh-ed25519 dgBsjw PUYHcP/tgNnKyvlIoJRcNcW3zabVV1iHXIWfKqgW9xc
+tXNjSuVH/g/oN5o75FPkFFpviF7SeFSN9kbqURvgMDE
+--- wHgBAN9c6F6T5hFJGo8uH8zqDkQDwx3/jVNKUtQ3arE
+«Ñ¢Á
+ò@µú¡fÃ`m;ÕcæäU²€ùò£Íd…eS’èyfv¿»¡€J?ø `œfj£Äa}lÃó ¿Úxç²BÇt2èfìôm08ÓoÝtRál9˜èx¤¢ŒÅž›æ÷

services/README.md

@@ -21,11 +21,11 @@ For those that know it, we could say that the current module is an analogous of
 
 ## Content of this directory
 
-- [fediversity](./fediversity) contains the definition of the services. Look in
+- [fediversity][./fediversity] contains the definition of the services. Look in
   particular at its `default.nix` that contains the definition of the options.
 
-- [vm](./vm) contains options specific to making the service run in local QEMU
+- [vm][./vm] contains options specific to making the service run in local QEMU
   VMs. These modules will for instance override the defaults to disable SSL, and
   they will add virtualisation options to forward ports, for instance.
 
-- [tests](./tests) contain full NixOS tests of the services.
+- [tests][./tests] contain full NixOS tests of the services.

services/default.nix

@@ -0,0 +1,13 @@
+{
+  system ? builtins.currentSystem,
+  sources ? import ../npins,
+  pkgs ? import sources.nixpkgs { inherit system; },
+  ...
+}:
+{
+  tests = {
+    mastodon = pkgs.nixosTest ./tests/mastodon.nix;
+    pixelfed-garage = pkgs.nixosTest ./tests/pixelfed-garage.nix;
+    peertube = pkgs.nixosTest ./tests/peertube.nix;
+  };
+}

services/fediversity/default.nix

@@ -49,7 +49,7 @@ in
               displayName = mkOption {
                 type = types.str;
                 description = "Name of the initial user, for humans";
-                default = config.fediversity.temp.initialUser.username;
+                default = config.fediversity.temp.initialUser.name;
               };
               email = mkOption {
                 type = types.str;
@@ -65,16 +65,4 @@ in
       };
     };
   };
-
-  config = {
-    ## FIXME: This should clearly go somewhere else; and we should have a
-    ## `staging` vs. `production` setting somewhere.
-    security.acme = {
-      acceptTerms = true;
-      # use a priority more urgent than mkDefault for panel deployment to work,
-      # yet looser than default so this will not clash with the setting in tests.
-      defaults.email = lib.modules.mkOverride 200 "something@fediversity.net";
-      # defaults.server = "https://acme-staging-v02.api.letsencrypt.org/directory";
-    };
-  };
 }

services/tests/flake-part.nix

@@ -1,14 +0,0 @@
-{ ... }:
-{
-  _class = "flake";
-
-  perSystem =
-    { pkgs, ... }:
-    {
-      checks = {
-        test-mastodon-service = pkgs.testers.runNixOSTest ./mastodon.nix;
-        test-pixelfed-garage-service = pkgs.testers.runNixOSTest ./pixelfed-garage.nix;
-        test-peertube-service = pkgs.testers.runNixOSTest ./peertube.nix;
-      };
-    };
-}

services/tests/mastodon.nix

@@ -6,7 +6,7 @@
 { pkgs, ... }:
 
 let
-  inherit (pkgs) lib writeText;
+  lib = pkgs.lib;
 
   ## FIXME: this binding was not used, but maybe we want a side-effect or something?
   # rebuildableTest = import ./rebuildableTest.nix pkgs;
@@ -69,17 +69,9 @@ in
           expect
         ];
         environment.variables = {
-          AWS_ACCESS_KEY_ID = "$(cat ${config.fediversity.mastodon.s3AccessKeyFile})";
-          AWS_SECRET_ACCESS_KEY = "$(cat ${config.fediversity.mastodon.s3SecretKeyFile})";
+          AWS_ACCESS_KEY_ID = config.fediversity.garage.ensureKeys.mastodon.id;
+          AWS_SECRET_ACCESS_KEY = config.fediversity.garage.ensureKeys.mastodon.secret;
         };
-        services.mastodon.extraEnvFiles = [
-          # generate as: cd ${pkgs.mastodon}; IGNORE_ALREADY_SET_SECRETS=true RAILS_ENV=development ${pkgs.mastodon}/bin/rails db:encryption:init
-          (writeText "rest" ''
-            ACTIVE_RECORD_ENCRYPTION_DETERMINISTIC_KEY=naGoEzeyjUmwIlmgZZmGQDWJrlWud5eX
-            ACTIVE_RECORD_ENCRYPTION_KEY_DERIVATION_SALT=A0tE1VJ7S3cjaOQ58mNkhrVFY7o5NKDB
-            ACTIVE_RECORD_ENCRYPTION_PRIMARY_KEY=tGHhd5Os7hLxa8QTzWwjyVLrvsj5VsCw
-          '')
-        ];
       };
   };
 

services/tests/pixelfed-garage.nix

@@ -113,7 +113,6 @@ let
 
         ${seleniumQuit}'';
 
-  dummyFile = pkgs.writeText "dummy" "dummy";
 in
 {
   name = "test-pixelfed-garage";
@@ -162,8 +161,8 @@ in
         ];
         environment.variables = {
           POST_MEDIA = ./fediversity.png;
-          AWS_ACCESS_KEY_ID = "$(cat ${config.fediversity.pixelfed.s3AccessKeyFile})";
-          AWS_SECRET_ACCESS_KEY = "$(cat ${config.fediversity.pixelfed.s3SecretKeyFile})";
+          AWS_ACCESS_KEY_ID = config.fediversity.garage.ensureKeys.pixelfed.id;
+          AWS_SECRET_ACCESS_KEY = config.fediversity.garage.ensureKeys.pixelfed.secret;
           ## without this we get frivolous errors in the logs
           MC_REGION = "garage";
         };
@@ -171,12 +170,6 @@ in
         users.users.selenium = {
           isNormalUser = true;
         };
-        fediversity.temp.initialUser = {
-          username = "dummy";
-          displayName = "dummy";
-          email = "dummy";
-          passwordFile = dummyFile;
-        };
       };
   };