Ignore local version identifiers in constraints.

Torch is frequently installed with a local version identifier (e.g.
`+cu126`), but that identifier causes an issue with pip because there is
no public package with that identifier unless an explicit alternative
index is used. Stripping the local version identifier should be safe, as
we are only using constraints to ensure that per-model dependencies are
aligned with existing installations.

Author: senokay

utils/__init__.py

@@ -26,6 +26,7 @@ def get_pkg_versions(packages: List[str]) -> Dict[str, str]:
     for module in packages:
         cmd = [sys.executable, "-c", f"import {module}; print({module}.__version__)"]
         version = subprocess.check_output(cmd).decode().strip()
+        version = version.split('+')[0] # Remove any local version identifiers
         versions[module] = version
     return versions