From a52252c919049cb9c00551cc1b794eb6c6cd16ce Mon Sep 17 00:00:00 2001
From: Andrew Marshall <andrew@johnandrewmarshall.com>
Date: Wed, 8 Nov 2023 05:22:37 -0500
Subject: [PATCH 1/2] parallel-full: fix missing files and meta

Previously, this was not usable as a drop-in replacement for `parallel`
since it only included the one exe. This changes to additionally symlink
all files from $out as well as symlink all other outputs. So no files
are missing compared to `parallel`, while being efficiently symlinked.

Further, copy meta and version from the base package.
---
 pkgs/tools/misc/parallel/wrapper.nix | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/pkgs/tools/misc/parallel/wrapper.nix b/pkgs/tools/misc/parallel/wrapper.nix
index 0240f1ac9e9e..6e3dfc67c8d8 100644
--- a/pkgs/tools/misc/parallel/wrapper.nix
+++ b/pkgs/tools/misc/parallel/wrapper.nix
@@ -1,10 +1,18 @@
-{ lib, runCommand, makeWrapper, parallel, perlPackages
+{ lib, symlinkJoin, makeWrapper, parallel, perlPackages
 , extraPerlPackages ? with perlPackages; [ DBI DBDPg DBDSQLite DBDCSV TextCSV ]
 , willCite ? false }:
 
-runCommand "parallel-full" { nativeBuildInputs = [ makeWrapper ]; } ''
-  mkdir -p $out/bin
-  makeWrapper ${parallel}/bin/parallel $out/bin/parallel \
-    --set PERL5LIB "${perlPackages.makeFullPerlPath extraPerlPackages}" \
-    ${lib.optionalString willCite "--add-flags --will-cite"}
-''
+symlinkJoin {
+  name = "parallel-full";
+  inherit (parallel) outputs;
+  nativeBuildInputs = [ makeWrapper ];
+  paths = [ parallel ];
+  postBuild = ''
+    ${lib.concatMapStringsSep "\n" (output: "ln -s --no-target-directory ${parallel.${output}} \$${output}") (lib.remove "out" parallel.outputs)}
+
+    rm $out/bin/parallel
+    makeWrapper ${parallel}/bin/parallel $out/bin/parallel \
+      --set PERL5LIB "${perlPackages.makeFullPerlPath extraPerlPackages}" \
+      ${lib.optionalString willCite "--add-flags --will-cite"}
+  '';
+}

From a1347423d217390ac86cf406350a6d6d867a3575 Mon Sep 17 00:00:00 2001
From: Andrew Marshall <andrew@johnandrewmarshall.com>
Date: Sun, 14 Apr 2024 09:15:14 -0400
Subject: [PATCH 2/2] parallel-full: add missing package metadata

---
 pkgs/tools/misc/parallel/wrapper.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/tools/misc/parallel/wrapper.nix b/pkgs/tools/misc/parallel/wrapper.nix
index 6e3dfc67c8d8..b798a1acea22 100644
--- a/pkgs/tools/misc/parallel/wrapper.nix
+++ b/pkgs/tools/misc/parallel/wrapper.nix
@@ -3,8 +3,8 @@
 , willCite ? false }:
 
 symlinkJoin {
-  name = "parallel-full";
-  inherit (parallel) outputs;
+  name = "parallel-full-${parallel.version}";
+  inherit (parallel) pname version meta outputs;
   nativeBuildInputs = [ makeWrapper ];
   paths = [ parallel ];
   postBuild = ''