arandr: make reproducible by setting mtime=0

pkgs/by-name/ar/arandr/gzip-timestamp-fix.patch

@@ -0,0 +1,15 @@
+--- setup.py	2025-04-01 11:24:54.530984662 +0000
++++ setup.py	2025-04-01 13:54:46.961341548 +0000
+ 
+@@ -111,9 +111,11 @@
+                 info('compressing man page to %s', gzfile)
+ 
+                 if not self.dry_run:
+-                    compressed = gzip.open(gzfile, 'w', 9)
+-                    compressed.write(manpage)
+-                    compressed.close()
++                    with open(gzfile, 'wb') as file:
++                        with gzip.GzipFile(fileobj=file, mode='wb', filename='', mtime=0, compresslevel=9) as compressed:
++                            compressed.write(manpage)
++                            compressed.close()
++                            file.close()

pkgs/by-name/ar/arandr/package.nix

@@ -1,6 +1,7 @@
 {
   lib,
   fetchurl,
+  fetchFromGitLab,
   python3Packages,
   gobject-introspection,
   gsettings-desktop-schemas,
@@ -16,11 +17,17 @@ buildPythonApplication rec {
   pname = "arandr";
   version = "0.1.11";
 
-  src = fetchurl {
-    url = "https://christian.amsuess.com/tools/arandr/files/${pname}-${version}.tar.gz";
-    hash = "sha256-5Mu+Npi7gSs5V3CHAXS+AJS7rrOREFqBH5X0LrGCrgI=";
+  src = fetchFromGitLab {
+    owner = "arandr";
+    repo = "arandr";
+    tag = version;
+    hash = "sha256-nQtfOKAnWKsy2DmvtRGJa4+Y9uGgX41BeHpd9m4d9YA=";
   };
 
+  # patch to set mtime=0 on setup.py
+  patches = [ ./gzip-timestamp-fix.patch ];
+  patchFlags = [ "-p0" ];
+
   preBuild = ''
     rm -rf data/po/*
   '';