forked from mirrors/nixpkgs
nixos/gitolite: customize .gitolite.rc declaratively
Add the `extraGitoliteRc` option to customize the `.gitolite.rc` configuration file declaratively. Resolves #29249.
This commit is contained in:
Pavel Goran
Bjørn Forsman
parent
24bed29809
commit
c73a3813fa
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@ -49,6 +49,35 @@ in
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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 = literalExample ''
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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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description = ''
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Extra configuration to append to the default <literal>~/.gitolite.rc</literal>.
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This should be Perl code that modifies the <literal>%RC</literal>
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configuration variable. The default <literal>~/.gitolite.rc</literal>
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content is generated by invoking <literal>gitolite print-default-rc</literal>,
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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 <literal>~/.gitolite.rc</literal> 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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<literal>~/.gitolite.rc</literal> 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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<literal>~/.gitolite.rc</literal>, convert them to appropriate Perl
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statements, add them to this option, and remove the file.
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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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@ -59,7 +88,34 @@ in
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};
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};
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config = mkIf cfg.enable {
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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" { } 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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''} >>"$out/gitolite.rc"
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'';
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in {
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users.extraUsers.${cfg.user} = {
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description = "Gitolite user";
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home = cfg.dataDir;
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@ -77,21 +133,61 @@ in
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serviceConfig.Type = "oneshot";
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serviceConfig.RemainAfterExit = true;
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path = [ pkgs.gitolite pkgs.git pkgs.perl pkgs.bash config.programs.ssh.package ];
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script = ''
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cd ${cfg.dataDir}
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mkdir -p .gitolite/logs
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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 ${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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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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cd ${cfg.dataDir}
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mkdir -p .gitolite/logs
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GITOLITE_RC=.gitolite.rc
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GITOLITE_RC_DEFAULT=${rcDir}/gitolite.rc.default
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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 ${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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};
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});
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}
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