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pkgs:
let
/* Building an engine or out-of-tree mod is very similar,
but different enough not to be able to build them with the same package definition,
so instaed we define what is common between them in a seperate file.
Although `callPackage` could be used, it would require undoing `makeOverridable`,
because `common.nix` does not define a package, but just an attribute set,
which is directly passed as part of the argument to the engines and mods `callPackage`,
so either the attributes added by `makeOverridable` have to be removed
or the engine and mod package definitions will need to add `...` to the argument list.
*/
common = let f = import ./common.nix; in f (builtins.intersectAttrs (builtins.functionArgs f) pkgs // {
lua = pkgs.lua5_1;
# It is not necessary to run the game, but it is nicer to be given an error dialog in the case of failure,
# rather than having to look to the logs why it is not starting.
inherit (pkgs.gnome) zenity;
});
/* Building a set of engines or mods requires some dependencies as well,
so the sets will actually be defined as a function instead,
requiring the dependencies and returning the actual set.
Not all dependencies for defining a engine or mod set are shared,
so additional arguments can be passed as well.
The builders for engines and mods allow to delay specifying the name,
by returning a function that expects a name, which we use, in this case,
to base the name on the attribute name instead, preventing the need to specify the name twice
if the attribute name and engine/mod name are equal.
*/
buildOpenRASet = f: args: builtins.mapAttrs (name: value: if builtins.isFunction value then value name else value) (f ({
inherit (pkgs) fetchFromGitHub;
postFetch = ''
sed -i 's/curl/curl --insecure/g' $out/thirdparty/{fetch-thirdparty-deps,noget}.sh
$out/thirdparty/fetch-thirdparty-deps.sh
'';
} // args));
in rec {
# The whole attribute set is destructered to ensure those (and only those) attributes are given
# and to provide defaults for those that are optional.
buildOpenRAEngine = { name ? null, version, description, homepage, mods, src, installExperimental ? "" }@engine:
# Allow specifying the name at a later point if no name has been given.
let builder = name: pkgs.callPackage ./engine.nix (common // {
engine = engine // { inherit name installExperimental; };
}); in if name == null then builder else builder name;
# See `buildOpenRAEngine`.
buildOpenRAMod = { name ? null, version, title, description, homepage, src, engine }@mod: ({ version, mods ? [], src }@engine:
let builder = name: pkgs.callPackage ./mod.nix (common // {
mod = mod // { inherit name; };
engine = engine // { inherit mods; };
}); in if name == null then builder else builder name) engine;
# See `buildOpenRASet`.
engines = buildOpenRASet (import ./engines.nix) { inherit buildOpenRAEngine; };
mods = buildOpenRASet (import ./mods.nix) { inherit buildOpenRAMod; };
}
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