Handle whitespace around requirements (#2779)

Resolves #2773

.pre-commit-config.yaml

@@ -25,7 +25,7 @@ repos:
       - id: pyupgrade
         files: "^(tests/demo_pkg_inline/build.py)$"
   - repo: https://github.com/PyCQA/isort
-    rev: v5.11.3
+    rev: 5.11.4
     hooks:
       - id: isort
   - repo: https://github.com/psf/black
@@ -78,7 +78,7 @@ repos:
         name: changelog filenames
         language: fail
         entry: "changelog files must be named ####.(feature|bugfix|doc|removal|misc).rst"
-        exclude: ^docs/changelog/(\d+\.(feature|bugfix|doc|removal|misc).rst|README.rst|template.jinja2)
+        exclude: ^docs/changelog/(\d+\.(feature|bugfix|doc|removal|misc).rst|template.jinja2)
         files: ^docs/changelog/
   - repo: meta
     hooks:

docs/changelog/2773.bugfix.rst

@@ -0,0 +1 @@
+Strip leading and trailing whitespace when parsing elements in requirement files - by :user:`gaborbernat`.

pyproject.toml

@@ -42,7 +42,7 @@ optional-dependencies.docs = [
   "sphinx-copybutton>=0.5.1",
   "sphinx-inline-tabs>=2022.1.2b11",
   "sphinxcontrib-towncrier>=0.2.1a0",
-  "towncrier>=22.8",
+  "towncrier>=22.12",
 ]
 optional-dependencies.testing = [
   "build[virtualenv]>=0.9",

src/tox/tox_env/python/pip/req/file.py

@@ -361,7 +361,7 @@ def _break_args_options(line: str) -> tuple[str, str]:
             else:
                 args.append(token)
                 options.pop(0)
-        return " ".join(args), " ".join(options)
+        return " ".join(args).strip(), " ".join(options)
 
     @staticmethod
     def _join_lines(lines_enum: ReqFileLines) -> ReqFileLines:

tests/tox_env/python/pip/req/test_file.py

@@ -272,6 +272,13 @@
         ["attrs"],
         id="sha512 hash is supported",
     ),
+    pytest.param(
+        "\tp @ https://github.com/a/b/c/d.zip ",
+        {},
+        ["p@ https://github.com/a/b/c/d.zip"],
+        ["p@ https://github.com/a/b/c/d.zip"],
+        id="whitespace around",
+    ),
 ]
 
 

tox.ini

@@ -43,7 +43,7 @@ passenv =
     PROGRAMDATA
 skip_install = true
 deps =
-    pre-commit>=2.20
+    pre-commit>=2.21
 commands =
     pre-commit run --all-files --show-diff-on-failure {posargs}
     python -c 'print(r"hint: run {envbindir}{/}pre-commit install to add checks as pre-commit hook")'
@@ -85,7 +85,7 @@ skip_install = true
 deps =
     gitpython>=3.1.29
     packaging>=22
-    towncrier>=22.8
+    towncrier>=22.12
 commands =
     python {toxinidir}/tasks/release.py --version {posargs}