Merge pull request #10321 from akx/fix-launch-git-get

launch.py: fix git_tag() & fix commit_hash() & simplify

launch.py

@@ -5,6 +5,7 @@ import sys
 import importlib.util
 import platform
 import json
+from functools import lru_cache
 
 from modules import cmd_args
 from modules.paths_internal import script_path, extensions_dir
@@ -14,8 +15,6 @@ args, _ = cmd_args.parser.parse_known_args()
 python = sys.executable
 git = os.environ.get('GIT', "git")
 index_url = os.environ.get('INDEX_URL', "")
-stored_commit_hash = None
-stored_git_tag = None
 dir_repos = "repositories"
 
 # Whether to default to printing command output
@@ -56,32 +55,20 @@ Use --skip-python-version-check to suppress this warning.
 """)
 
 
+@lru_cache()
 def commit_hash():
-    global stored_commit_hash
-
-    if stored_commit_hash is not None:
-        return stored_commit_hash
-
     try:
-        stored_commit_hash = run(f"{git} rev-parse HEAD").strip()
+        return subprocess.check_output(f"{git} rev-parse HEAD", encoding='utf8').strip()
     except Exception:
-        stored_commit_hash = "<none>"
-
-    return stored_commit_hash
+        return "<none>"
 
 
+@lru_cache()
 def git_tag():
-    global stored_git_tag
-
-    if stored_git_tag is not None:
-        return stored_git_tag
-
     try:
-        stored_git_tag = run(f"{git} describe --tags").strip()
+        return subprocess.check_output(f"{git} describe --tags", encoding='utf8').strip()
     except Exception:
-        stored_git_tag = "<none>"
-
-    return stored_git_tag
+        return "<none>"
 
 
 def run(command, desc=None, errdesc=None, custom_env=None, live: bool = default_command_live) -> str:
@@ -116,11 +103,6 @@ def run(command, desc=None, errdesc=None, custom_env=None, live: bool = default_
     return (result.stdout or "")
 
 
-def check_run(command):
-    result = subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
-    return result.returncode == 0
-
-
 def is_installed(package):
     try:
         spec = importlib.util.find_spec(package)
@@ -134,10 +116,6 @@ def repo_dir(name):
     return os.path.join(script_path, dir_repos, name)
 
 
-def run_python(code, desc=None, errdesc=None):
-    return run(f'"{python}" -c "{code}"', desc, errdesc)
-
-
 def run_pip(command, desc=None, live=default_command_live):
     if args.skip_install:
         return
@@ -146,8 +124,9 @@ def run_pip(command, desc=None, live=default_command_live):
     return run(f'"{python}" -m pip {command} --prefer-binary{index_url_line}', desc=f"Installing {desc}", errdesc=f"Couldn't install {desc}", live=live)
 
 
-def check_run_python(code):
-    return check_run(f'"{python}" -c "{code}"')
+def check_run_python(code: str) -> bool:
+    result = subprocess.run([python, "-c", code], capture_output=True, shell=True)
+    return result.returncode == 0
 
 
 def git_clone(url, dir, name, commithash=None):
@@ -274,8 +253,11 @@ def prepare_environment():
     if args.reinstall_torch or not is_installed("torch") or not is_installed("torchvision"):
         run(f'"{python}" -m {torch_command}', "Installing torch and torchvision", "Couldn't install torch", live=True)
 
-    if not args.skip_torch_cuda_test:
-        run_python("import torch; assert torch.cuda.is_available(), 'Torch is not able to use GPU; add --skip-torch-cuda-test to COMMANDLINE_ARGS variable to disable this check'")
+    if not args.skip_torch_cuda_test and not check_run_python("import torch; assert torch.cuda.is_available()"):
+        raise RuntimeError(
+            'Torch is not able to use GPU; '
+            'add --skip-torch-cuda-test to COMMANDLINE_ARGS variable to disable this check'
+        )
 
     if not is_installed("gfpgan"):
         run_pip(f"install {gfpgan_package}", "gfpgan")