nixpkgs/nixos/modules/services/misc/ihaskell.nix
Eelco Dolstra f3d94cfc23 Revert "Add the tool "nixos-typecheck" that can check an option declaration to:"
This reverts commit cad8957eabcbf73062226d28366fd446c15c8737. It
breaks NixOps, but more importantly, such major changes to the module
system really need to be reviewed.
2016-03-01 20:52:06 +01:00

76 lines
2.0 KiB
Nix

{ pkgs, lib, config, ... }:
with lib;
let
cfg = config.services.ihaskell;
ihaskell = pkgs.ihaskell.override {
packages = self: cfg.extraPackages self;
};
in
{
options = {
services.ihaskell = {
enable = mkOption {
default = false;
example = true;
description = "Autostart an IHaskell notebook service.";
};
haskellPackages = mkOption {
default = pkgs.haskellPackages;
defaultText = "pkgs.haskellPackages";
example = literalExample "pkgs.haskell.packages.ghc784";
description = ''
haskellPackages used to build IHaskell and other packages.
This can be used to change the GHC version used to build
IHaskell and the packages listed in
<varname>extraPackages</varname>.
'';
};
extraPackages = mkOption {
default = self: [];
example = literalExample ''
haskellPackages: [
haskellPackages.wreq
haskellPackages.lens
]
'';
description = ''
Extra packages available to ghc when running ihaskell. The
value must be a function which receives the attrset defined
in <varname>haskellPackages</varname> as the sole argument.
'';
};
};
};
config = mkIf cfg.enable {
users.extraUsers.ihaskell = {
group = config.users.extraGroups.ihaskell.name;
description = "IHaskell user";
home = "/var/lib/ihaskell";
createHome = true;
uid = config.ids.uids.ihaskell;
};
users.extraGroups.ihaskell.gid = config.ids.gids.ihaskell;
systemd.services.ihaskell = {
description = "IHaskell notebook instance";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig = {
User = config.users.extraUsers.ihaskell.name;
Group = config.users.extraGroups.ihaskell.name;
ExecStart = "${pkgs.stdenv.shell} -c \"cd $HOME;${ihaskell}/bin/ihaskell-notebook\"";
};
};
};
}