88842910b5
Goal is to improve separation between packages and utilities.
Can help with autocompletion/navigate nixpkgs faster.
Also it will help standardize how LUA_PATH is exported across packages,
so that one can more easily make lua changes across nixpkgs (for
instance changing where lua modules are installed).
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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