Change how we bundle meld into git.

nix/configuration/roles/git/default.nix

@@ -5,6 +5,18 @@
   ...
 }:
 
+let
+  git_wrapped =
+    package: prog:
+    pkgs.writeShellScriptBin "${prog}" ''
+      export PATH="${
+        lib.makeBinPath [
+          pkgs.meld
+        ]
+      }:$PATH"
+      exec ${package}/bin/${prog} "''${@}"
+    '';
+in
 {
   imports = [ ];
 
@@ -35,27 +47,33 @@
     (lib.mkIf (config.me.graphical) {
       nixpkgs.overlays = [
         (final: prev: {
-          my_git = pkgs.symlinkJoin {
-            name = final.git.name;
-            paths = [
-              final.git
+          my_git = (
+            pkgs.buildEnv {
+              name = prev.git.name;
+              version = prev.git.version;
+              paths =
+                (builtins.map (git_wrapped prev.git) [
+                  "git"
+                ])
+                ++ [
+                  prev.git
+                ];
+              extraOutputsToInstall = [
+                "man"
+                "doc"
+                "info"
               ];
               nativeBuildInputs = [ final.makeWrapper ];
-            postBuild = ''
-              wrapProgram $out/bin/git --prefix PATH : ${
-                lib.makeBinPath [
-                  final.meld
-                ]
+              ignoreCollisions = true;
             }
-            '';
-          };
+          );
         })
       ];
     })
     (lib.mkIf (!config.me.graphical) {
       nixpkgs.overlays = [
         (final: prev: {
-          my_git = final.git;
+          my_git = prev.git;
         })
       ];
     })