commit 903665f31c5c8aeaaf6481c44c3e47702ea465ad · pyrox.dev/nixpkgs

nixos/modules/module-list.nix

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         ./services/system/kerberos/default.nix

     

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         ./services/system/nscd.nix

     

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         ./services/system/saslauthd.nix

     

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         ./services/system/self-deploy.nix

     

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         ./services/system/uptimed.nix

     

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         ./services/torrent/deluge.nix

     

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         ./services/torrent/flexget.nix

+170

nixos/modules/services/system/self-deploy.nix

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       { config, lib, pkgs, ... }:

     

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       let

     

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         cfg = config.services.self-deploy;

     

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         workingDirectory = "/var/lib/nixos-self-deploy";

     

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         repositoryDirectory = "${workingDirectory}/repo";

     

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         outPath = "${workingDirectory}/system";

     

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         gitWithRepo = "git -C ${repositoryDirectory}";

     

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       +
       

     

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         renderNixArgs = args:

     

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           let

     

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             toArg = key: value:

     

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               if builtins.isString value

     

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               then " --argstr ${lib.escapeShellArg key} ${lib.escapeShellArg value}"

     

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               else " --arg ${lib.escapeShellArg key} ${lib.escapeShellArg (toString value)}";

     

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           in

     

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           lib.concatStrings (lib.mapAttrsToList toArg args);

     

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         isPathType = x: lib.strings.isCoercibleToString x && builtins.substring 0 1 (toString x) == "/";

     

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       in

     

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       {

     

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         options.services.self-deploy = {

     

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           enable = lib.mkEnableOption "self-deploy";

     

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       +
       

     

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           nixFile = lib.mkOption {

     

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             type = lib.types.path;

     

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             default = "/default.nix";

     

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             description = ''

     

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               Path to nix file in repository. Leading '/' refers to root of

     

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               git repository.

     

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             '';

     

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           };

     

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       +
       

     

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           nixAttribute = lib.mkOption {

     

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             type = lib.types.str;

     

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       +
       

     

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             description = ''

     

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               Attribute of `nixFile` that builds the current system.

     

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             '';

     

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           };

     

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       +
       

     

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           nixArgs = lib.mkOption {

     

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             type = lib.types.attrs;

     

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       +
       

     

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             default = { };

     

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             description = ''

     

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               Arguments to `nix-build` passed as `--argstr` or `--arg` depending on

     

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               the type.

     

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             '';

     

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           };

     

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           switchCommand = lib.mkOption {

     

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             type = lib.types.enum [ "boot" "switch" "dry-activate" "test" ];

     

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             default = "switch";

     

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             description = ''

     

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               The `switch-to-configuration` subcommand used.

     

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             '';

     

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           };

     

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           repository = lib.mkOption {

     

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             type = with lib.types; oneOf [ path str ];

     

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             description = ''

     

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               The repository to fetch from. Must be properly formatted for git.

     

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               If this value is set to a path (must begin with `/`) then it's

     

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               assumed that the repository is local and the resulting service

     

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               won't wait for the network to be up.

     

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               If the repository will be fetched over SSH, you must add an

     

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               entry to `programs.ssh.knownHosts` for the SSH host for the fetch

     

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               to be successful.

     

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             '';

     

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           };

     

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           sshKeyFile = lib.mkOption {

     

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             type = with lib.types; nullOr path;

     

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             default = null;

     

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             description = ''

     

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               Path to SSH private key used to fetch private repositories over

     

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               SSH.

     

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             '';

     

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           };

     

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           branch = lib.mkOption {

     

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             type = lib.types.str;

     

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             default = "master";

     

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             description = ''

     

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               Branch to track

     

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               Technically speaking any ref can be specified here, as this is

     

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               passed directly to a `git fetch`, but for the use-case of

     

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               continuous deployment you're likely to want to specify a branch.

     

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             '';

     

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           };

     

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           startAt = lib.mkOption {

     

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             type = with lib.types; either str (listOf str);

     

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             default = "hourly";

     

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             description = ''

     

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               The schedule on which to run the `self-deploy` service. Format

     

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               specified by `systemd.time 7`.

     

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               This value can also be a list of `systemd.time 7` formatted

     

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               strings, in which case the service will be started on multiple

     

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               schedules.

     

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             '';

     

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           };

     

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         };

     

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         config = lib.mkIf cfg.enable {

     

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           systemd.services.self-deploy = {

     

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             wantedBy = [ "multi-user.target" ];

     

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             requires = lib.mkIf (!(isPathType cfg.repository)) [ "network-online.target" ];

     

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             environment.GIT_SSH_COMMAND = lib.mkIf (!(isNull cfg.sshKeyFile))

     

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               "${pkgs.openssh}/bin/ssh -i ${lib.escapeShellArg cfg.sshKeyFile}";

     

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             restartIfChanged = false;

     

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             path = with pkgs; [

     

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               git

     

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               nix

     

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               systemd

     

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             ];

     

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             script = ''

     

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               if [ ! -e ${repositoryDirectory} ]; then

     

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                 mkdir --parents ${repositoryDirectory}

     

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                 git init ${repositoryDirectory}

     

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               fi

     

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               ${gitWithRepo} fetch ${lib.escapeShellArg cfg.repository} ${lib.escapeShellArg cfg.branch}

     

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               ${gitWithRepo} checkout FETCH_HEAD

     

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               nix-build${renderNixArgs cfg.nixArgs} ${lib.cli.toGNUCommandLineShell { } {

     

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                 attr = cfg.nixAttribute;

     

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                 out-link = outPath;

     

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               }} ${lib.escapeShellArg "${repositoryDirectory}${cfg.nixFile}"}

     

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               ${lib.optionalString (cfg.switchCommand != "test")

     

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                 "nix-env --profile /nix/var/nix/profiles/system --set ${outPath}"}

     

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               ${outPath}/bin/switch-to-configuration ${cfg.switchCommand}

     

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               rm ${outPath}

     

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               ${gitWithRepo} gc --prune=all

     

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               ${lib.optionalString (cfg.switchCommand == "boot") "systemctl reboot"}

     

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             '';

     

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           };

     

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         };

     

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       }