cmdoptions: Check if format_control exists before accessing it

Fixes a case when per-setup.py options are specified in a requirement file, and we are trying to invoke uninstall
pypa · Mar 7, 2021 · a81b83f · a81b83f
1 parent d9d7790
commit a81b83f
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diff --git a/news/9444.bugfix.rst b/news/9444.bugfix.rst
@@ -0,0 +1 @@
+Permit ``pip uninstall -r`` to accept requirements files containing ``--install-option`` or ``--global-option``.
diff --git a/src/pip/_internal/cli/cmdoptions.py b/src/pip/_internal/cli/cmdoptions.py
@@ -75,8 +75,9 @@ def getname(n):
         return getattr(check_options, n, None)
 
     names = ["build_options", "global_options", "install_options"]
-    if any(map(getname, names)):
-        control = options.format_control
+
+    control = getattr(options, "format_control", None)
+    if control and any(map(getname, names)):
         control.disallow_binaries()
         warnings.warn(
             "Disabling all use of wheels due to the use of --build-option "