fix parsing

pydeps2env/environment.py

@@ -10,6 +10,15 @@
 import warnings
 
 
+def split_extras(filename: str) -> tuple[str, set]:
+    """Split extras requirements indicated in []."""
+    if "[" in filename:
+            filename, extras = filename.split("[",1)
+            extras = set(extras.split("]",1)[0].split(","))
+    else:
+            extras = {}
+    return filename, extras
+
 def add_requirement(
     req: Requirement | str,
     requirements: dict[str, Requirement],
@@ -53,9 +62,8 @@ class Environment:
     def __post_init__(self):
         self.extras = set(self.extras)
 
-        if isinstance(self.filename, str) and "[" in self.filename:
-            self.filename, extras = self.filename.split("[",1)
-            extras = extras.split("]",1)[0].split(",")
+        if isinstance(self.filename, str):
+            self.filename, extras = split_extras(self.filename)
             self.extras |= set(extras)
 
         if Path(self.filename).suffix == ".toml":

pydeps2env/generate_environment.py

@@ -2,6 +2,11 @@
 
 from pathlib import Path
 
+try:
+    from pydeps2env.environment import Environment, split_extras
+except ModuleNotFoundError:  # try local file if not installed
+    from environment import Environment, split_extras
+
 
 def create_environment_file(
     filename: list[str],
@@ -11,14 +16,9 @@ def create_environment_file(
     pip: list[str],
     include_build_system: bool = False,
 ):
-    try:
-        from pydeps2env.environment import Environment
-    except ModuleNotFoundError:  # try local file if not installed
-        from environment import Environment
-
     env = Environment(filename[0], pip_packages=pip, extras=extras, channels=channels)
     for f in filename[1:]:
-        env.combine(Environment(f))
+        env.combine(Environment(f, pip_packages=pip, extras=extras, channels=channels))
 
     _include = include_build_system == "include"
     env.export(output_file, include_build_system=_include)
@@ -47,8 +47,9 @@ def main():
     args = parser.parse_args()
 
     for file in args.setup:
-        if not Path(file).is_file():
-            raise FileNotFoundError(f"Could not find file {args.setup}")
+        filename, _ = split_extras(file)
+        if not Path(filename).is_file():
+            raise FileNotFoundError(f"Could not find file {filename}")
 
     create_environment_file(
         filename=args.setup,