64 lines
2.0 KiB
Nix
64 lines
2.0 KiB
Nix
{ pkgs, lib, lua }:
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let
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requiredLuaModules = drvs: with lib; let
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modules = filter hasLuaModule drvs;
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in unique ([lua] ++ modules ++ concatLists (catAttrs "requiredLuaModules" modules));
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# Check whether a derivation provides a lua module.
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hasLuaModule = drv: drv ? luaModule;
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in
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rec {
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inherit hasLuaModule requiredLuaModules;
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luaPathList = [
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"share/lua/${lua.luaversion}/?.lua"
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"share/lua/${lua.luaversion}/?/init.lua"
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];
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luaCPathList = [
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"lib/lua/${lua.luaversion}/?.so"
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];
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/* generate paths without a prefix
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*/
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luaPathRelStr = lib.concatStringsSep ";" luaPathList;
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luaCPathRelStr = lib.concatStringsSep ";" luaCPathList;
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/* generate LUA_(C)PATH value for a specific derivation, i.e., with absolute paths
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*/
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genLuaPathAbsStr = drv: lib.concatMapStringsSep ";" (x: "${drv}/${x}") luaPathList;
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genLuaCPathAbsStr = drv: lib.concatMapStringsSep ";" (x: "${drv}/${x}") luaCPathList;
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/* Generate a LUA_PATH with absolute paths
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*/
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# genLuaPathAbs = drv:
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# lib.concatStringsSep ";" (map (x: "${drv}/x") luaPathList);
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luaAtLeast = lib.versionAtLeast lua.luaversion;
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luaOlder = lib.versionOlder lua.luaversion;
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isLua51 = (lib.versions.majorMinor lua.version) == "5.1";
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isLua52 = (lib.versions.majorMinor lua.version) == "5.2";
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isLua53 = lua.luaversion == "5.3";
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isLuaJIT = lib.getName lua == "luajit";
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/* generates the relative path towards the folder where
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seems stable even when using lua_modules_path = ""
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Example:
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getDataFolder luaPackages.stdlib
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=> stdlib-41.2.2-1-rocks/stdlib/41.2.2-1/doc
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*/
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getDataFolder = drv:
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"${drv.pname}-${drv.version}-rocks/${drv.pname}/${drv.version}";
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/* Convert derivation to a lua module.
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so that luaRequireModules can be run later
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*/
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toLuaModule = drv:
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drv.overrideAttrs( oldAttrs: {
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# Use passthru in order to prevent rebuilds when possible.
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passthru = (oldAttrs.passthru or {}) // {
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luaModule = lua;
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requiredLuaModules = requiredLuaModules drv.propagatedBuildInputs;
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};
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});
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}
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