forked from fediversity/fediversity
779 lines
28 KiB
Nix
779 lines
28 KiB
Nix
{
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pkgs,
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lib,
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config,
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inputs,
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sources ? import ../npins,
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...
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}:
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let
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inherit (lib) mkOption types;
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inherit (lib.types)
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attrTag
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attrsOf
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deferredModuleWith
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functionTo
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nullOr
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optionType
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raw
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str
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submodule
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;
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inherit (pkgs.callPackage ./utils.nix { }) toBash withPackages tfApply;
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writeConfig =
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{
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system,
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caller,
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root-path,
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deployment-type,
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deployment-name,
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args,
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}:
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# having a `caller` location and (serializable) `args`, we know
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# enough to call it again to extract different info elsewhere later.
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# we use this to make a deployment script using the desired nixos config,
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# which would otherwise not be serializable, while nix also makes it hard to
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# produce its derivation to pass thru without a `nix-instantiate` call,
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# which in turn would need to be passed the (unserializable) nixos config.
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builtins.toString (
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pkgs.writers.writeText "configuration.nix" ''
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import ${root-path}/deployment/nixos.nix {
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system = "${system}";
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configuration = (import "${root-path}/${caller}" (builtins.fromJSON "${
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lib.replaceStrings [ "\"" ] [ "\\\"" ] (lib.strings.toJSON args)
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}")).${deployment-name}.${deployment-type}.nixos-configuration;
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}
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''
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);
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functionType = submodule ./function.nix;
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application-resources = submodule {
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options.resources = mkOption {
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# TODO: maybe transpose, and group the resources by type instead
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type = attrsOf (
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attrTag (
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lib.mapAttrs (_name: resource: mkOption { type = submodule resource.request; }) config.resources
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)
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);
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};
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};
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nixops4Deployment = types.deferredModuleWith {
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staticModules = [
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inputs.nixops4.modules.nixops4Deployment.default
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{
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_class = "nixops4Deployment";
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_module.args = {
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resourceProviderSystem = pkgs.system;
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resources = { };
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};
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}
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];
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};
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nixos-configuration = mkOption {
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description = "A NixOS configuration.";
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type = raw;
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};
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httpBackend = mkOption {
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description = "environment variables to configure the TF HTTP back-end, see <https://developer.hashicorp.com/terraform/language/backend/http#configuration-variables>";
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type = types.submodule (http-backend: {
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options = {
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value = mkOption {
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readOnly = true;
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default = lib.mapAttrs' (k: v: lib.nameValuePair "TF_HTTP_${lib.toUpper k}" (builtins.toString v)) {
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inherit (http-backend.config)
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address
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update_method
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lock_address
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lock_method
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unlock_address
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unlock_method
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username
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password
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skip_cert_verification
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retry_max
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retry_wait_min
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retry_wait_max
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;
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};
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};
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address = mkOption {
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description = "The address of the REST endpoint";
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type = str;
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};
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update_method = mkOption {
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description = "HTTP method to use when updating state.";
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type = str;
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default = "POST";
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};
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lock_address = mkOption {
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description = "The address of the lock REST endpoint.";
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type = str;
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default = http-backend.config.address;
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};
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lock_method = mkOption {
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description = "The HTTP method to use when locking.";
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type = str;
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default = "LOCK";
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};
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unlock_address = mkOption {
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description = "The address of the unlock REST endpoint.";
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type = str;
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default = http-backend.config.address;
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};
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unlock_method = mkOption {
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description = "The HTTP method to use when unlocking.";
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type = str;
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default = "UNLOCK";
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};
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username = mkOption {
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description = "The username for HTTP basic authentication.";
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type = str;
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default = "basic";
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};
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password = mkOption {
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description = "The password for HTTP basic authentication.";
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type = str;
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default = "fake-secret";
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};
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skip_cert_verification = mkOption {
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description = "Whether to skip TLS verification.";
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type = str;
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default = "false";
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};
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retry_max = mkOption {
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description = "The number of HTTP request retries.";
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type = types.int;
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default = 2;
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};
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retry_wait_min = mkOption {
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description = "The minimum time in seconds to wait between HTTP request attempts.";
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type = types.int;
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default = 1;
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};
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retry_wait_max = mkOption {
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description = "The maximum time in seconds to wait between HTTP request attempts.";
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type = types.int;
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default = 30;
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};
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};
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});
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};
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host-ssh = mkOption {
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description = "SSH connection info to connect to a single host.";
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type = submodule {
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options = {
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host = mkOption {
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description = "the host to access by SSH";
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type = str;
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};
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username = mkOption {
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description = "the SSH user to use";
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type = nullOr str;
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default = null;
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};
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key-file = mkOption {
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description = "path to the user's SSH private key";
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type = nullOr str;
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example = "/root/.ssh/id_ed25519";
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};
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sshOpts = mkOption {
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description = "Extra SSH options (`-o`) to use.";
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type = types.listOf str;
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default = [ ];
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example = "ConnectTimeout=60";
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};
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};
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};
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};
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# FIXME allow custom deployment types
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# FIXME make deployments environment resources?
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deployment-type = attrTag {
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ssh-host = mkOption {
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description = "A deployment by SSH to update a single existing NixOS host.";
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type = submodule (ssh-host: {
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options = {
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system = mkOption {
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description = "The architecture of the system to deploy to.";
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type = types.str;
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};
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inherit nixos-configuration;
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ssh = host-ssh;
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caller = mkOption {
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description = "The calling module to obtain the NixOS configuration from.";
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type = types.str;
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};
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args = mkOption {
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description = "The arguments with which to call the module to obtain the NixOS configuration.";
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type = types.attrs;
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};
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deployment-name = mkOption {
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description = "The name of the deployment for which to obtain the NixOS configuration.";
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type = types.str;
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default = "default";
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};
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root-path = mkOption {
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description = "The path to the root of the repository.";
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type = types.path;
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};
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run = mkOption {
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type = types.package;
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# error: The option `ssh-deployment.ssh-host.run' is read-only, but it's set multiple times.
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# readOnly = true;
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default =
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let
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inherit (ssh-host.config)
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system
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ssh
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caller
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args
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deployment-name
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root-path
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;
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inherit (ssh)
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host
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username
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key-file
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sshOpts
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;
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environment = {
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key_file = key-file;
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ssh_opts = sshOpts;
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inherit
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host
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username
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;
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nixos_conf = writeConfig {
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inherit
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system
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caller
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args
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deployment-name
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root-path
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;
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deployment-type = "ssh-host";
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};
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};
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in
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pkgs.writers.writeBashBin "deploy-sh.sh"
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(withPackages [
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pkgs.jq
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])
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''
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env ${
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toString (lib.mapAttrsToList (k: v: "${k}=\"${toBash v}\"") environment)
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} bash ./deployment/run/ssh-single-host/run.sh
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'';
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};
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};
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});
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};
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nixops4 = mkOption {
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description = "A NixOps4 NixOS deployment. For an example, see https://github.com/nixops4/nixops4-nixos/blob/main/example/deployment.nix.";
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type = nixops4Deployment;
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};
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tf-host = mkOption {
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description = "A Terraform deployment by SSH to update a single existing NixOS host.";
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type = submodule (tf-host: {
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options = {
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system = mkOption {
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description = "The architecture of the system to deploy to.";
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type = types.str;
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};
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inherit httpBackend nixos-configuration;
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ssh = host-ssh;
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caller = mkOption {
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description = "The calling module to obtain the NixOS configuration from.";
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type = types.str;
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};
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args = mkOption {
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description = "The arguments with which to call the module to obtain the NixOS configuration.";
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type = types.attrs;
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};
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deployment-name = mkOption {
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description = "The name of the deployment for which to obtain the NixOS configuration.";
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type = types.str;
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};
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root-path = mkOption {
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description = "The path to the root of the repository.";
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type = types.path;
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};
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run = mkOption {
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type = types.package;
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# error: The option `tf-deployment.tf-host.run' is read-only, but it's set multiple times.
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# readOnly = true;
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default =
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let
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inherit (tf-host.config)
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system
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ssh
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caller
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args
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deployment-name
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root-path
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httpBackend
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;
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inherit (ssh)
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host
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username
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key-file
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sshOpts
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;
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in
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tfApply {
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inherit httpBackend;
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directory = "tf-single-host";
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environment = {
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key_file = key-file;
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ssh_opts = sshOpts;
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inherit
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host
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username
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;
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nixos_conf = writeConfig {
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inherit
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system
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caller
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args
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deployment-name
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root-path
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;
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deployment-type = "tf-host";
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};
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};
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};
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};
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};
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});
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};
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tf-proxmox-template = mkOption {
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description = ''
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A Terraform deployment to upload a virtual machine template to ProxmoX VE.
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Proxmox credentials should be set using [environment variables]
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(https://registry.terraform.io/providers/bpg/proxmox/latest/docs#environment-variables-summary)
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with role `PVEDatastoreAdmin`.
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'';
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type = submodule (tf-host: {
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options = {
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system = mkOption {
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description = "The architecture of the system to deploy to.";
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type = types.str;
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};
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inherit httpBackend nixos-configuration;
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ssh = host-ssh;
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node-name = mkOption {
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description = "the name of the ProxmoX node to use.";
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type = types.str;
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};
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imageDatastoreId = mkOption {
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description = "ID of the datastore of the image.";
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type = types.str;
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default = "local";
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};
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run = mkOption {
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type = types.package;
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# error: The option `tf-deployment.tf-host.run' is read-only, but it's set multiple times.
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# readOnly = true;
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default =
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let
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inherit (tf-host.config)
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system
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ssh
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httpBackend
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node-name
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imageDatastoreId
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;
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inherit (ssh)
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host
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;
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machine = import ./nixos.nix {
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inherit sources system;
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configuration = tf-host.config.nixos-configuration;
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};
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name = "fediversity-template";
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# worse for cross-compilation, better for pre-/post-processing, needs manual `imageSize`, random failures: https://github.com/nix-community/disko/issues/550#issuecomment-2503736973
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raw = "${machine.config.system.build.diskoImages}/main.raw";
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environment = {
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inherit
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host
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;
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node_name = node-name;
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image_datastore_id = imageDatastoreId;
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};
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in
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lib.trace (lib.strings.toJSON environment) pkgs.writers.writeBashBin "deploy-tf-proxmox-template.sh"
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(withPackages [
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pkgs.qemu
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])
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''
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set -e
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# nixos-generate gives the burden of building revisions, while systemd-repart handles partitioning ~~at the burden of version revisions~~
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# .qcow2 is around half the size of .raw, on top of supporting backups - be it apparently at the cost of performance
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qemu-img convert -f raw -O qcow2 -C "${raw}" /tmp/${name}.qcow2
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ls -l ${raw} >&2
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ls -l /tmp/${name}.qcow2 >&2
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checksum="$(sha256sum /tmp/${name}.qcow2 | cut -d " " -f1)"
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env \
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TF_VAR_image=/tmp/${name}.qcow2 \
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TF_VAR_checksum="$checksum" \
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${lib.getExe (tfApply {
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inherit httpBackend environment;
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directory = "tf-proxmox-template";
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})}
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'';
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};
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};
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});
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};
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tf-proxmox-vm = mkOption {
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description = ''
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A Terraform deployment to provision and update a virtual machine on ProxmoX VE.
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Proxmox credentials should be set using [environment variables]
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(https://registry.terraform.io/providers/bpg/proxmox/latest/docs#environment-variables-summary)
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with roles `PVEVMAdmin PVEDatastoreAdmin PVESDNUser`.
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'';
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type = submodule (tf-host: {
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options = {
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system = mkOption {
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description = "The architecture of the system to deploy to.";
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type = types.str;
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};
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inherit httpBackend nixos-configuration;
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ssh = host-ssh;
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caller = mkOption {
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description = "The calling module to obtain the NixOS configuration from.";
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type = types.str;
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};
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args = mkOption {
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description = "The arguments with which to call the module to obtain the NixOS configuration.";
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type = types.attrs;
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};
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deployment-name = mkOption {
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description = "The name of the deployment for which to obtain the NixOS configuration.";
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type = types.str;
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};
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root-path = mkOption {
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description = "The path to the root of the repository.";
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type = types.path;
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};
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node-name = mkOption {
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description = "the name of the ProxmoX node to use.";
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type = types.str;
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};
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bridge = mkOption {
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description = "The name of the network bridge (defaults to vmbr0).";
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type = types.str;
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default = "vmbr0";
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};
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vlanId = mkOption {
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description = "The VLAN identifier.";
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type = types.int;
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default = 0;
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};
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imageDatastoreId = mkOption {
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description = "ID of the datastore of the image.";
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type = types.str;
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default = "local";
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};
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templateId = mkOption {
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description = "ID of the template file from which to clone the VM.";
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type = types.nullOr types.str;
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example = "local:import/template.qcow2";
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};
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vmDatastoreId = mkOption {
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description = "ID of the datastore of the VM.";
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type = types.str;
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default = "local";
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};
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cdDatastoreId = mkOption {
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description = "ID of the datastore of the virtual CD-rom drive to use for cloud-init.";
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type = types.str;
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default = "local";
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};
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ipv4Gateway = mkOption {
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description = "Gateway for IPv4.";
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type = types.str;
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default = "";
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};
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ipv4Address = mkOption {
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description = "IPv4 address.";
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type = types.str;
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default = "";
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};
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ipv6Gateway = mkOption {
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description = "Gateway for IPv6.";
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type = types.str;
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default = "";
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};
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ipv6Address = mkOption {
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description = "IPv6 address.";
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type = types.str;
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default = "";
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};
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run = mkOption {
|
|
type = types.package;
|
|
# error: The option `tf-deployment.tf-host.run' is read-only, but it's set multiple times.
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|
# readOnly = true;
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|
default =
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let
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inherit (tf-host.config)
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system
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ssh
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caller
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args
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deployment-name
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httpBackend
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root-path
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node-name
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bridge
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vlanId
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imageDatastoreId
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templateId
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vmDatastoreId
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cdDatastoreId
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ipv4Gateway
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ipv4Address
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ipv6Gateway
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ipv6Address
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;
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inherit (ssh)
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host
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username
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key-file
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sshOpts
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;
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deployment-type = "tf-proxmox-vm";
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|
nixos_conf = writeConfig {
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inherit
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system
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caller
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args
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deployment-name
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root-path
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deployment-type
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;
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};
|
|
environment = {
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key_file = key-file;
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ssh_opts = sshOpts;
|
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inherit
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host
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nixos_conf
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bridge
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;
|
|
node_name = node-name;
|
|
ssh_user = username;
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|
vlan_id = vlanId;
|
|
image_datastore_id = imageDatastoreId;
|
|
template_id = templateId;
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|
vm_datastore_id = vmDatastoreId;
|
|
cd_datastore_id = cdDatastoreId;
|
|
ipv4_gateway = ipv4Gateway;
|
|
ipv4_address = ipv4Address;
|
|
ipv6_gateway = ipv6Gateway;
|
|
ipv6_address = ipv6Address;
|
|
};
|
|
in
|
|
lib.trace (lib.strings.toJSON environment) (tfApply {
|
|
inherit httpBackend environment;
|
|
directory = "tf-proxmox-vm";
|
|
dependentDirs = [ "tf-single-host" ];
|
|
});
|
|
};
|
|
};
|
|
});
|
|
};
|
|
};
|
|
in
|
|
{
|
|
options = {
|
|
resources = mkOption {
|
|
description = "Collection of deployment resources that can be required by applications and policed by hosting providers";
|
|
type = attrsOf (
|
|
submodule (
|
|
{ ... }:
|
|
{
|
|
_class = "fediversity-resource";
|
|
options = {
|
|
description = mkOption {
|
|
description = "Description of the resource to help application module authors and hosting providers to work with it";
|
|
type = types.str;
|
|
};
|
|
request = mkOption {
|
|
description = "Options for declaring resource requirements by an application, a description of how the resource is consumed or accessed";
|
|
type = deferredModuleWith { staticModules = [ { _class = "fediversity-resource-request"; } ]; };
|
|
};
|
|
policy = mkOption {
|
|
description = "Options for configuring the resource policy for the hosting provider, a description of how the resource is made available";
|
|
type = deferredModuleWith {
|
|
staticModules = [
|
|
(policy: {
|
|
_class = "fediversity-resource-policy";
|
|
options.resource-type = mkOption {
|
|
description = "The type of resource this policy configures";
|
|
type = types.optionType;
|
|
};
|
|
# TODO(@fricklerhandwerk): we may want to make the function type explicit here: `application-resources -> resource-type`
|
|
# and then also rename this to be consistent with the application's resource mapping
|
|
options.apply = mkOption {
|
|
description = "Apply the policy to a request";
|
|
type = functionTo policy.config.resource-type;
|
|
};
|
|
})
|
|
];
|
|
};
|
|
};
|
|
};
|
|
}
|
|
)
|
|
);
|
|
};
|
|
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 = application.config.config-mapping.function-type;
|
|
readOnly = true;
|
|
default = application.config.config-mapping.apply;
|
|
};
|
|
# TODO(@fricklerhandwerk): this needs a better name
|
|
config-mapping = mkOption {
|
|
description = "Function type for the mapping from application configuration to required resources";
|
|
type = functionType;
|
|
readOnly = true;
|
|
default = {
|
|
input-type = submodule application.config.module;
|
|
output-type = application-resources;
|
|
implementation = application.config.implementation;
|
|
};
|
|
};
|
|
};
|
|
})
|
|
);
|
|
};
|
|
environments = mkOption {
|
|
description = "Run-time environments for Fediversity applications to be deployed to";
|
|
type = attrsOf (
|
|
submodule (environment: {
|
|
_class = "fediversity-environment";
|
|
options = {
|
|
resources = mkOption {
|
|
description = ''
|
|
Resources made available by the hosting provider, and their policies.
|
|
|
|
Setting this is optional, but provides a place to declare that information for programmatic use in the resource mapping.
|
|
'';
|
|
# TODO: maybe transpose, and group the resources by type instead
|
|
type = attrsOf (
|
|
attrTag (
|
|
lib.mapAttrs (_name: resource: mkOption { type = submodule resource.policy; }) config.resources
|
|
)
|
|
);
|
|
};
|
|
implementation = mkOption {
|
|
description = "Mapping of resources required by applications to available resources; the result can be deployed";
|
|
type = environment.config.resource-mapping.function-type;
|
|
};
|
|
resource-mapping = mkOption {
|
|
description = "Function type for the mapping from resources to a deployment";
|
|
type = functionType;
|
|
readOnly = true;
|
|
default = {
|
|
input-type = submodule {
|
|
options = {
|
|
deployment-name = mkOption {
|
|
type = types.str;
|
|
};
|
|
required-resources = mkOption {
|
|
type = attrsOf application-resources;
|
|
};
|
|
};
|
|
};
|
|
output-type = deployment-type;
|
|
implementation = environment.config.implementation;
|
|
};
|
|
};
|
|
config-mapping = mkOption {
|
|
description = "Mapping from a configuration to a deployment";
|
|
type = functionType;
|
|
readOnly = true;
|
|
default = {
|
|
input-type = submodule {
|
|
options = {
|
|
deployment-name = mkOption {
|
|
type = types.str;
|
|
};
|
|
configuration = mkOption {
|
|
type = config.configuration;
|
|
};
|
|
};
|
|
};
|
|
output-type = deployment-type;
|
|
implementation =
|
|
{
|
|
deployment-name,
|
|
configuration,
|
|
}:
|
|
# TODO: check cfg.enable.true
|
|
let
|
|
required-resources = lib.mapAttrs (
|
|
name: application-settings: config.applications.${name}.resources application-settings
|
|
) configuration.applications;
|
|
in
|
|
environment.config.resource-mapping.apply { inherit required-resources deployment-name; };
|
|
};
|
|
};
|
|
# TODO(@fricklerhandwerk): maybe this should be a separate thing such as `fediversity-setup`,
|
|
# which makes explicit which applications and environments are available.
|
|
# then the deployments can simply be the result of the function application baked into this module.
|
|
deployment = mkOption {
|
|
description = "Generate a deployment from a configuration, by applying an environment's resource policies to the applications' resource mappings";
|
|
type = environment.config.config-mapping.function-type;
|
|
readOnly = true;
|
|
default = environment.config.config-mapping.apply;
|
|
};
|
|
};
|
|
})
|
|
);
|
|
};
|
|
configuration = mkOption {
|
|
description = "Configuration type declaring options to be set by operators";
|
|
type = optionType;
|
|
readOnly = true;
|
|
default = submodule {
|
|
options = {
|
|
enable = lib.mkEnableOption "your Fediversity configuration";
|
|
applications = lib.mapAttrs (
|
|
_name: application:
|
|
mkOption {
|
|
description = application.description;
|
|
type = submodule application.module;
|
|
default = { };
|
|
}
|
|
) config.applications;
|
|
};
|
|
};
|
|
};
|
|
};
|
|
}
|