Merge pull request #250621 from apfelkuchen6/texlive-noop-refactors

texlive: some small refactors

pkgs/tools/typesetting/tex/texlive/combine.nix

@@ -1,4 +1,6 @@
-params: with params;
+{ lib, buildEnv, runCommand, writeText, makeWrapper, libfaketime, makeFontsConf
+, perl, bash, coreutils, gnused, gnugrep, gawk, ghostscript
+, bin, tl }:
 # combine =
 args@{
   pkgFilter ? (pkg: pkg.tlType == "run" || pkg.tlType == "bin" || pkg.pname == "core"
@@ -8,6 +10,22 @@ args@{
 , ...
 }:
 let
+  # combine a set of TL packages into a single TL meta-package
+  combinePkgs = pkgList: lib.catAttrs "pkg" (
+    let
+      # a TeX package is an attribute set { pkgs = [ ... ]; ... } where pkgs is a list of derivations
+      # the derivations make up the TeX package and optionally (for backward compatibility) its dependencies
+      tlPkgToSets = { pkgs, ... }: map ({ tlType, version ? "", outputName ? "", ... }@pkg: {
+          # outputName required to distinguish among bin.core-big outputs
+          key = "${pkg.pname or pkg.name}.${tlType}-${version}-${outputName}";
+          inherit pkg;
+        }) pkgs;
+      pkgListToSets = lib.concatMap tlPkgToSets; in
+    builtins.genericClosure {
+      startSet = pkgListToSets pkgList;
+      operator = { pkg, ... }: pkgListToSets (pkg.tlDeps or []);
+    });
+
   pkgSet = removeAttrs args [ "pkgFilter" "extraName" "extraVersion" ];
   pkgList = rec {
     combined = combinePkgs (lib.attrValues pkgSet);