This option allows for the customization of the description of the created gitolite user. An example of this being useful is for the integration of gitolite with cgit, which itself uses the gitolite user's description as the author of the git repo displayed in its generated site.
242 lines
8.1 KiB
Nix
242 lines
8.1 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.gitolite;
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# Use writeTextDir to not leak Nix store hash into file name
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pubkeyFile = (pkgs.writeTextDir "gitolite-admin.pub" cfg.adminPubkey) + "/gitolite-admin.pub";
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hooks = lib.concatMapStrings (hook: "${hook} ") cfg.commonHooks;
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in
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{
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options = {
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services.gitolite = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = lib.mdDoc ''
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Enable gitolite management under the
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`gitolite` user. After
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switching to a configuration with Gitolite enabled, you can
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then run `git clone gitolite@host:gitolite-admin.git` to manage it further.
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'';
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};
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dataDir = mkOption {
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type = types.str;
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default = "/var/lib/gitolite";
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description = lib.mdDoc ''
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The gitolite home directory used to store all repositories. If left as the default value
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this directory will automatically be created before the gitolite server starts, otherwise
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the sysadmin is responsible for ensuring the directory exists with appropriate ownership
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and permissions.
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'';
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};
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adminPubkey = mkOption {
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type = types.str;
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description = lib.mdDoc ''
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Initial administrative public key for Gitolite. This should
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be an SSH Public Key. Note that this key will only be used
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once, upon the first initialization of the Gitolite user.
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The key string cannot have any line breaks in it.
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'';
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};
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enableGitAnnex = mkOption {
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type = types.bool;
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default = false;
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description = lib.mdDoc ''
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Enable git-annex support. Uses the `extraGitoliteRc` option
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to apply the necessary configuration.
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'';
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};
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commonHooks = mkOption {
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type = types.listOf types.path;
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default = [];
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description = lib.mdDoc ''
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A list of custom git hooks that get copied to `~/.gitolite/hooks/common`.
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'';
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};
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extraGitoliteRc = mkOption {
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type = types.lines;
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default = "";
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example = literalExpression ''
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'''
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$RC{UMASK} = 0027;
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$RC{SITE_INFO} = 'This is our private repository host';
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push( @{$RC{ENABLE}}, 'Kindergarten' ); # enable the command/feature
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@{$RC{ENABLE}} = grep { $_ ne 'desc' } @{$RC{ENABLE}}; # disable the command/feature
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'''
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'';
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description = lib.mdDoc ''
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Extra configuration to append to the default `~/.gitolite.rc`.
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This should be Perl code that modifies the `%RC`
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configuration variable. The default `~/.gitolite.rc`
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content is generated by invoking `gitolite print-default-rc`,
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and extra configuration from this option is appended to it. The result
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is placed to Nix store, and the `~/.gitolite.rc` file
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becomes a symlink to it.
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If you already have a customized (or otherwise changed)
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`~/.gitolite.rc` file, NixOS will refuse to replace
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it with a symlink, and the `gitolite-init` initialization service
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will fail. In this situation, in order to use this option, you
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will need to take any customizations you may have in
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`~/.gitolite.rc`, convert them to appropriate Perl
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statements, add them to this option, and remove the file.
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See also the `enableGitAnnex` option.
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'';
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};
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user = mkOption {
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type = types.str;
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default = "gitolite";
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description = lib.mdDoc ''
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Gitolite user account. This is the username of the gitolite endpoint.
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'';
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};
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description = mkOption {
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type = types.str;
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default = "Gitolite user";
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description = lib.mdDoc ''
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Gitolite user account's description.
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'';
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};
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group = mkOption {
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type = types.str;
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default = "gitolite";
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description = lib.mdDoc ''
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Primary group of the Gitolite user account.
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'';
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};
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};
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};
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config = mkIf cfg.enable (
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let
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manageGitoliteRc = cfg.extraGitoliteRc != "";
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rcDir = pkgs.runCommand "gitolite-rc" { preferLocalBuild = true; } rcDirScript;
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rcDirScript =
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''
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mkdir "$out"
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export HOME=temp-home
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mkdir -p "$HOME/.gitolite/logs" # gitolite can't run without it
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'${pkgs.gitolite}'/bin/gitolite print-default-rc >>"$out/gitolite.rc.default"
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cat <<END >>"$out/gitolite.rc"
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# This file is managed by NixOS.
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# Use services.gitolite options to control it.
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END
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cat "$out/gitolite.rc.default" >>"$out/gitolite.rc"
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'' +
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optionalString (cfg.extraGitoliteRc != "") ''
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echo -n ${escapeShellArg ''
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# Added by NixOS:
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${removeSuffix "\n" cfg.extraGitoliteRc}
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# per perl rules, this should be the last line in such a file:
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1;
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''} >>"$out/gitolite.rc"
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'';
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in {
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services.gitolite.extraGitoliteRc = optionalString cfg.enableGitAnnex ''
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# Enable git-annex support:
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push( @{$RC{ENABLE}}, 'git-annex-shell ua');
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'';
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users.users.${cfg.user} = {
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description = cfg.description;
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home = cfg.dataDir;
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uid = config.ids.uids.gitolite;
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group = cfg.group;
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useDefaultShell = true;
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};
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users.groups.${cfg.group}.gid = config.ids.gids.gitolite;
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systemd.services.gitolite-init = {
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description = "Gitolite initialization";
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wantedBy = [ "multi-user.target" ];
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unitConfig.RequiresMountsFor = cfg.dataDir;
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environment = {
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GITOLITE_RC = ".gitolite.rc";
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GITOLITE_RC_DEFAULT = "${rcDir}/gitolite.rc.default";
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};
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serviceConfig = mkMerge [
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(mkIf (cfg.dataDir == "/var/lib/gitolite") {
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StateDirectory = "gitolite gitolite/.gitolite gitolite/.gitolite/logs";
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StateDirectoryMode = "0750";
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})
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{
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Type = "oneshot";
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User = cfg.user;
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Group = cfg.group;
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WorkingDirectory = "~";
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RemainAfterExit = true;
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}
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];
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path = [ pkgs.gitolite pkgs.git pkgs.perl pkgs.bash pkgs.diffutils config.programs.ssh.package ];
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script =
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let
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rcSetupScriptIfCustomFile =
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if manageGitoliteRc then ''
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cat <<END
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<3>ERROR: NixOS can't apply declarative configuration
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<3>to your .gitolite.rc file, because it seems to be
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<3>already customized manually.
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<3>See the services.gitolite.extraGitoliteRc option
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<3>in "man configuration.nix" for more information.
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END
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# Not sure if the line below addresses the issue directly or just
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# adds a delay, but without it our error message often doesn't
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# show up in `systemctl status gitolite-init`.
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journalctl --flush
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exit 1
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'' else ''
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:
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'';
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rcSetupScriptIfDefaultFileOrStoreSymlink =
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if manageGitoliteRc then ''
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ln -sf "${rcDir}/gitolite.rc" "$GITOLITE_RC"
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'' else ''
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[[ -L "$GITOLITE_RC" ]] && rm -f "$GITOLITE_RC"
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'';
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in
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''
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if ( [[ ! -e "$GITOLITE_RC" ]] && [[ ! -L "$GITOLITE_RC" ]] ) ||
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( [[ -f "$GITOLITE_RC" ]] && diff -q "$GITOLITE_RC" "$GITOLITE_RC_DEFAULT" >/dev/null ) ||
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( [[ -L "$GITOLITE_RC" ]] && [[ "$(readlink "$GITOLITE_RC")" =~ ^/nix/store/ ]] )
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then
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'' + rcSetupScriptIfDefaultFileOrStoreSymlink +
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''
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else
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'' + rcSetupScriptIfCustomFile +
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''
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fi
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if [ ! -d repositories ]; then
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gitolite setup -pk ${pubkeyFile}
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fi
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if [ -n "${hooks}" ]; then
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cp -f ${hooks} .gitolite/hooks/common/
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chmod +x .gitolite/hooks/common/*
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fi
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gitolite setup # Upgrade if needed
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'';
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};
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environment.systemPackages = [ pkgs.gitolite pkgs.git ]
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++ optional cfg.enableGitAnnex pkgs.git-annex;
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});
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}
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