Fix SSH requirements crash

CHANGELOG.rst

@@ -2,7 +2,12 @@
 Release History
 ---------------
 
+2.2.2
+
+- Fix crash on requirements of the "git+ssh://..." format.
+
 2.2.1
+
 - Python source is now always read using utf-8, even if default encoding for
   reading files is set otherwise.
 

pip_check_reqs/__init__.py

@@ -1 +1 @@
-__version__ = '2.2.1'
+__version__ = '2.2.2'

pip_check_reqs/common.py

@@ -7,6 +7,7 @@
 
 from packaging.utils import canonicalize_name
 from packaging.markers import Marker
+
 # Between different versions of pip the location of PipSession has changed.
 try:
     from pip._internal.network.session import PipSession
@@ -141,6 +142,12 @@ def find_required_modules(options, requirements_filename: str):
                 requirement.requirement,
             ).name
 
+        if requirement_name is None:
+            # This happens when the requirement parsing fails, for e.g. a
+            # requirement in the format of
+            # git+ssh://[email protected]/...
+            continue
+
         if options.ignore_reqs(requirement):
             log.debug('ignoring requirement: %s', requirement_name)
             continue

tests/test_common.py

@@ -170,7 +170,9 @@ class options:
     options.ignore_reqs = common.ignorer(ignore_cfg=['barfoo'])
 
     fake_requirements_file = tmp_path / 'requirements.txt'
-    fake_requirements_file.write_text('foobar==1\nbarfoo==2')
+    fake_requirements_file.write_text('foobar==1\nbarfoo==2\n'
+                                      'git+ssh://[email protected]/'
+                                      'r1chardj0n3s/pip-check-reqs.git@master')
 
     reqs = common.find_required_modules(
         options=options,