feat: timeout config for network requests (#2683)

Fixes #2680

Signed-off-by: Frost Ming <[email protected]>

news/2680.feature.md

@@ -0,0 +1 @@
+Add configuration for timeout for network requests.

src/pdm/environments/base.py

@@ -117,6 +117,7 @@ def _build_session(self, trusted_hosts: list[str]) -> PDMSession:
             cache_dir=self.project.cache("http"),
             trusted_hosts=trusted_hosts,
             ca_certificates=Path(ca_certs) if ca_certs is not None else None,
+            timeout=self.project.config["request_timeout"],
         )
         certfn = self.project.config.get("pypi.client_cert")
         if certfn:

src/pdm/project/config.py

@@ -115,6 +115,9 @@ class Config(MutableMapping[str, str]):
             "PDM_BUILD_ISOLATION",
             ensure_boolean,
         ),
+        "request_timeout": ConfigItem(
+            "The timeout for network requests in seconds", 15, True, "PDM_REQUEST_TIMEOUT", coerce=int
+        ),
         "global_project.fallback": ConfigItem(
             "Use the global project implicitly if no local project is found",
             False,