supercell-wx: get copyright year from LICENSE and remove gitpython

dependency

pkgs/by-name/su/supercell-wx/package.nix

@@ -149,7 +149,6 @@ stdenv.mkDerivation (finalAttrs: {
     bzip2
     (python3.withPackages (ps: [
       ps.geopandas
-      ps.gitpython
     ]))
   ];
 })

pkgs/by-name/su/supercell-wx/patches/skip-git-versioning.patch

@@ -1,8 +1,28 @@
 diff --git a/scwx-qt/tools/generate_versions.py b/scwx-qt/tools/generate_versions.py
-index e7c470e..dde3e4f 100644
+index e7c470ef..dc7f336b 100644
 --- a/scwx-qt/tools/generate_versions.py
 +++ b/scwx-qt/tools/generate_versions.py
-@@ -74,15 +74,8 @@ def CollectVersionInfo(args):
+@@ -1,6 +1,5 @@
+ import argparse
+ import datetime
+-import git
+ import json
+ import os
+ import pathlib
+@@ -69,20 +68,21 @@ def ParseArguments():
+                         required = True)
+     return parser.parse_args()
+
++def GetYearFromLicense(license_file: pathlib.Path):
++    import re
++    for line in license_file.read_text().splitlines():
++        m = re.search(r'^\s*Copyright \(c\) 2021-(\d{4,})', line)
++        if m is not None:
++            return int(m.group(1))
++    raise RuntimeError(f"Could not find copyright year in {license_file}")
++
+ def CollectVersionInfo(args):
+     print("Collecting version info")
 
      versionInfo = VersionInfo()
 
@@ -16,7 +36,7 @@ index e7c470e..dde3e4f 100644
 -        commitString  = commitString + "+dirty"
 -        copyrightYear = datetime.date.today().year
 +    commitString = "@rev@"
-+    copyrightYear = datetime.date.today().year
++    copyrightYear = GetYearFromLicense(args.gitRepo_ / 'LICENSE.txt')
 
      versionInfo.commitString_  = commitString
      versionInfo.copyrightYear_ = copyrightYear