2021-09-11 22:01:49 +00:00
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{ pkgs, lib, lua }:
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let
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2023-04-23 00:43:37 +00:00
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inherit (lib.generators) toLua;
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2021-09-11 22:01:49 +00:00
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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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2021-10-03 22:10:46 +00:00
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/*
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Use this to override the arguments passed to buildLuarocksPackage
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*/
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overrideLuarocks = drv: f: (drv.override (args: args // {
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buildLuarocksPackage = drv: (args.buildLuarocksPackage drv).override f;
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})) // {
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overrideScope = scope: overrideLuarocks (drv.overrideScope scope) f;
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};
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2021-09-11 22:01:49 +00:00
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in
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rec {
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2021-10-03 22:10:46 +00:00
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inherit overrideLuarocks;
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2021-09-11 22:01:49 +00:00
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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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2023-03-30 13:43:19 +00:00
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drv.overrideAttrs(oldAttrs: {
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2021-09-11 22:01:49 +00:00
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# Use passthru in order to prevent rebuilds when possible.
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2021-09-11 23:20:30 +00:00
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passthru = (oldAttrs.passthru or {}) // {
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2021-09-11 22:01:49 +00:00
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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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2021-09-18 19:56:32 +00:00
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/* generate luarocks config
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generateLuarocksConfig {
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externalDeps = [ { name = "CRYPTO"; dep = pkgs.openssl; } ];
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rocksSubdir = "subdir";
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};
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*/
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generateLuarocksConfig = {
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2023-03-30 13:43:19 +00:00
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externalDeps
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2022-03-29 01:48:20 +00:00
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# a list of lua derivations
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2021-09-18 19:56:32 +00:00
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, requiredLuaRocks
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, extraVariables ? {}
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, rocksSubdir
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}: let
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rocksTrees = lib.imap0
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2023-07-07 14:26:00 +00:00
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(i: dep: {
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name = "dep-${toString i}";
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root = "${dep}";
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# packages built by buildLuaPackage or luarocks doesn't contain rocksSubdir
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# hence a default here
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rocks_dir = if dep ? rocksSubdir then "${dep}/${dep.rocksSubdir}" else "${dep.pname}-${dep.version}-rocks";
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})
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2021-09-18 19:56:32 +00:00
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requiredLuaRocks;
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# Explicitly point luarocks to the relevant locations for multiple-output
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# derivations that are external dependencies, to work around an issue it has
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# (https://github.com/luarocks/luarocks/issues/766)
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2023-04-23 00:43:37 +00:00
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depVariables = zipAttrsWithLast (lib.lists.map ({name, dep}: {
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"${name}_INCDIR" = "${lib.getDev dep}/include";
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"${name}_LIBDIR" = "${lib.getLib dep}/lib";
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"${name}_BINDIR" = "${lib.getBin dep}/bin";
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}) externalDeps');
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zipAttrsWithLast = lib.attrsets.zipAttrsWith (name: lib.lists.last);
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2021-09-18 19:56:32 +00:00
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# example externalDeps': [ { name = "CRYPTO"; dep = pkgs.openssl; } ]
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externalDeps' = lib.filter (dep: !lib.isDerivation dep) externalDeps;
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externalDepsDirs = map
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2023-04-23 00:43:37 +00:00
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(x: builtins.toString x)
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2021-09-18 19:56:32 +00:00
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(lib.filter (lib.isDerivation) externalDeps);
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2023-04-29 16:37:42 +00:00
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in toLua { asBindings = true; } ({
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local_cache = "";
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# To prevent collisions when creating environments, we install the rock
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# files into per-package subdirectories
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rocks_subdir = rocksSubdir;
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# first tree is the default target where new rocks are installed,
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# any other trees in the list are treated as additional sources of installed rocks for matching dependencies.
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rocks_trees = (
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2023-04-23 00:43:37 +00:00
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[{name = "current"; root = "${placeholder "out"}"; rocks_dir = "current"; }] ++
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rocksTrees
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2023-04-29 16:37:42 +00:00
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);
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} // lib.optionalAttrs lua.pkgs.isLuaJIT {
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# Luajit provides some additional functionality built-in; this exposes
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# that to luarock's dependency system
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2021-09-18 19:56:32 +00:00
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rocks_provided = {
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2023-04-23 00:43:37 +00:00
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jit = "${lua.luaversion}-1";
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ffi = "${lua.luaversion}-1";
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luaffi = "${lua.luaversion}-1";
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bit = "${lua.luaversion}-1";
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2023-04-29 16:37:42 +00:00
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};
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} // {
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# For single-output external dependencies
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external_deps_dirs = externalDepsDirs;
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# Some needed machinery to handle multiple-output external dependencies,
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# as per https://github.com/luarocks/luarocks/issues/766
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variables = (depVariables // extraVariables);
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});
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2021-09-11 22:01:49 +00:00
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}
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