Store config settings on the install requirement

src/pip/_internal/cli/req_command.py

@@ -325,6 +325,7 @@ class RequirementCommand(IndexGroupCommand):
             install_req_from_req_string,
             isolated=options.isolated_mode,
             use_pep517=use_pep517,
+            config_settings=options.config_settings,
         )
         suppress_build_failures = cls.determine_build_failure_suppression(options)
         resolver_variant = cls.determine_resolver_variant(options)
@@ -397,6 +398,7 @@ class RequirementCommand(IndexGroupCommand):
                 isolated=options.isolated_mode,
                 use_pep517=options.use_pep517,
                 user_supplied=True,
+                config_settings=options.config_settings,
             )
             requirements.append(req_to_add)
 
@@ -406,6 +408,7 @@ class RequirementCommand(IndexGroupCommand):
                 user_supplied=True,
                 isolated=options.isolated_mode,
                 use_pep517=options.use_pep517,
+                config_settings=options.config_settings,
             )
             requirements.append(req_to_add)
 

src/pip/_internal/req/constructors.py

@@ -207,6 +207,7 @@ def install_req_from_editable(
     constraint: bool = False,
     user_supplied: bool = False,
     permit_editable_wheels: bool = False,
+    config_settings: Optional[Dict[str, str]] = None,
 ) -> InstallRequirement:
 
     parts = parse_req_from_editable(editable_req)
@@ -224,6 +225,7 @@ def install_req_from_editable(
         install_options=options.get("install_options", []) if options else [],
         global_options=options.get("global_options", []) if options else [],
         hash_options=options.get("hashes", {}) if options else {},
+        config_settings=config_settings,
         extras=parts.extras,
     )
 
@@ -380,6 +382,7 @@ def install_req_from_line(
     constraint: bool = False,
     line_source: Optional[str] = None,
     user_supplied: bool = False,
+    config_settings: Optional[Dict[str, str]] = None,
 ) -> InstallRequirement:
     """Creates an InstallRequirement from a name, which might be a
     requirement, directory containing 'setup.py', filename, or URL.
@@ -399,6 +402,7 @@ def install_req_from_line(
         install_options=options.get("install_options", []) if options else [],
         global_options=options.get("global_options", []) if options else [],
         hash_options=options.get("hashes", {}) if options else {},
+        config_settings=config_settings,
         constraint=constraint,
         extras=parts.extras,
         user_supplied=user_supplied,
@@ -411,6 +415,7 @@ def install_req_from_req_string(
     isolated: bool = False,
     use_pep517: Optional[bool] = None,
     user_supplied: bool = False,
+    config_settings: Optional[Dict[str, str]] = None,
 ) -> InstallRequirement:
     try:
         req = get_requirement(req_string)
@@ -440,6 +445,7 @@ def install_req_from_req_string(
         isolated=isolated,
         use_pep517=use_pep517,
         user_supplied=user_supplied,
+        config_settings=config_settings,
     )
 
 
@@ -448,6 +454,7 @@ def install_req_from_parsed_requirement(
     isolated: bool = False,
     use_pep517: Optional[bool] = None,
     user_supplied: bool = False,
+    config_settings: Optional[Dict[str, str]] = None,
 ) -> InstallRequirement:
     if parsed_req.is_editable:
         req = install_req_from_editable(
@@ -457,6 +464,7 @@ def install_req_from_parsed_requirement(
             constraint=parsed_req.constraint,
             isolated=isolated,
             user_supplied=user_supplied,
+            config_settings=config_settings,
         )
 
     else:
@@ -469,6 +477,7 @@ def install_req_from_parsed_requirement(
             constraint=parsed_req.constraint,
             line_source=parsed_req.line_source,
             user_supplied=user_supplied,
+            config_settings=config_settings,
         )
     return req
 
@@ -487,4 +496,5 @@ def install_req_from_link_and_ireq(
         install_options=ireq.install_options,
         global_options=ireq.global_options,
         hash_options=ireq.hash_options,
+        config_settings=ireq.config_settings,
     )

src/pip/_internal/req/req_install.py

@@ -80,6 +80,7 @@ class InstallRequirement:
         install_options: Optional[List[str]] = None,
         global_options: Optional[List[str]] = None,
         hash_options: Optional[Dict[str, List[str]]] = None,
+        config_settings: Optional[Dict[str, str]] = None,
         constraint: bool = False,
         extras: Collection[str] = (),
         user_supplied: bool = False,
@@ -138,6 +139,7 @@ class InstallRequirement:
         self.install_options = install_options if install_options else []
         self.global_options = global_options if global_options else []
         self.hash_options = hash_options if hash_options else {}
+        self.config_settings = config_settings
         # Set to True after successful preparation of this requirement
         self.prepared = False
         # User supplied requirement are explicitly requested for installation

src/pip/_internal/resolution/resolvelib/candidates.py

@@ -69,6 +69,7 @@ def make_install_req_from_link(
             global_options=template.global_options,
             hashes=template.hash_options,
         ),
+        config_settings=template.config_settings,
     )
     ireq.original_link = template.original_link
     ireq.link = link
@@ -116,6 +117,7 @@ def _make_install_req_from_dist(
             global_options=template.global_options,
             hashes=template.hash_options,
         ),
+        config_settings=template.config_settings,
     )
     ireq.satisfied_by = dist
     return ireq