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