Remove fix-submodules.py

Now that we have absolute paths for submodules (since a76b233d) we no
longer need this script.

.gitlab-ci.yml

@@ -12,7 +12,6 @@ variables:
   GIT_DEPTH: 0
 
 before_script:
-  - python3 .gitlab/fix-submodules.py
   - git submodule sync --recursive
   - git submodule update --init --recursive
   - git checkout .gitmodules
@@ -217,7 +216,6 @@ validate-x86_64-linux-deb9-hadrian:
   before_script:
     # workaround for docker permissions
     - sudo chown ghc:ghc -R .
-    - python3 .gitlab/fix-submodules.py
     - git submodule sync --recursive
     - git submodule update --init --recursive
     - git checkout .gitmodules
@@ -232,7 +230,6 @@ hadrian-ghc-in-ghci:
   before_script:
     # workaround for docker permissions
     - sudo chown ghc:ghc -R .
-    - python3 .gitlab/fix-submodules.py
     - git submodule sync --recursive
     - git submodule update --init --recursive
     - git checkout .gitmodules
@@ -313,7 +310,6 @@ validate-x86_64-darwin:
     TEST_ENV: "x86_64-darwin"
   before_script:
     - git clean -xdf && git submodule foreach git clean -xdf
-    - python3 .gitlab/fix-submodules.py
     - git submodule sync --recursive
     - git submodule update --init --recursive
     - git checkout .gitmodules
@@ -347,7 +343,6 @@ validate-x86_64-darwin:
     TEST_ENV: "x86_64-darwin"
   before_script:
     - git clean -xdf && git submodule foreach git clean -xdf
-    - python3 .gitlab/fix-submodules.py
     - git submodule sync --recursive
     - git submodule update --init --recursive
     - git checkout .gitmodules
@@ -379,7 +374,6 @@ validate-x86_64-darwin:
     - x86_64-linux
   before_script:
     - git clean -xdf && git submodule foreach git clean -xdf
-    - python3 .gitlab/fix-submodules.py
     - git submodule sync --recursive
     - git submodule update --init --recursive
     - git checkout .gitmodules
@@ -684,7 +678,6 @@ validate-x86_64-linux-fedora27:
       set TEMP=%cd%\tmp
 
     - set PATH=C:\msys64\usr\bin;%PATH%
-    - python .gitlab/fix-submodules.py
     - git submodule sync --recursive
     - git submodule update --init --recursive
     - git checkout .gitmodules

.gitlab/fix-submodules.py

-#!/usr/bin/env python3
-
-"""
-Fix submodule upstream URLs. This ensures that CI builds of GHC forks
-clone their submodules from its usual location. Otherwise users would need to
-fork all submodules before their CI builds would succeed.
-"""
-
-from pathlib import Path
-import re
-
-x = open('.gitmodules').read()
-x = re.sub(r"url *= *\.\.", "url = https://gitlab.haskell.org/ghc", x)
-open('.gitmodules', 'w').write(x)
-
-import subprocess
-
-def get_configs(config_file):
-    args = ['git', 'config', '-f', config_file.as_posix(), '--list']
-    out = subprocess.check_output(args)
-    configs = {}
-    for line in out.decode('UTF-8').split('\n'):
-        if '=' in line:
-            k,v = line.split('=')
-            configs[k] = v
-
-    return configs
-
-def set_config(config_file, key, value):
-    args = ['git', 'config', '-f', config_file.as_posix(), '--replace', key, value]
-    subprocess.check_call(args)
-
-upstreams = {
-    'utils/haddock': 'https://github.com/haskell/haddock'
-}
-
-modules_config = Path('.gitmodules')
-
-def main():
-    for k,v in get_configs(modules_config).items():
-        match = re.match('submodule\.(.+)\.url', k)
-        if match is not None:
-            submod = match.group(1)
-            if submod in upstreams:
-                url = upstreams[submod]
-            else:
-                url = re.sub('\.\.', 'https://gitlab.haskell.org/ghc', v)
-
-            print('Using {submod} from {url}'.format(submod=submod, url=url))
-            set_config(modules_config, k, url)
-
-if __name__ == '__main__':
-    main()