Add basic Proxy support

changelogs/fragments/631-proxy-env.yml

@@ -0,0 +1,5 @@
+minor_changes:
+  - "Use Proxy configuration settings from the environment. Check out the 
+     `aiohttp documentation on Proxy support <https://docs.aiohttp.org/en/stable/client_advanced.html#proxy-support>`__
+     for information on which environment variables are supported
+     (https://github.com/ansible-community/antsibull-build/pull/631)."

src/antsibull_build/announcements.py

@@ -191,7 +191,7 @@ async def get_data(
         end_of_life:
             Whether this is the last release for this major release train
     """
-    async with ClientSession() as aio_session:
+    async with ClientSession(trust_env=True) as aio_session:
         client = PyPIClient(aio_session)
         try:
             release = await client.get_release("ansible", ansible_version)

src/antsibull_build/build_ansible_commands.py

@@ -74,7 +74,7 @@ async def download_collections(
     collection_cache: str | None = None,
 ) -> dict[str, str]:
     requestors = {}
-    async with aiohttp.ClientSession() as aio_session:
+    async with aiohttp.ClientSession(trust_env=True) as aio_session:
         lib_ctx = app_context.lib_ctx.get()
         async with asyncio_pool.AioPool(size=lib_ctx.thread_max) as pool:
             downloader = CollectionDownloader(
@@ -96,7 +96,7 @@ async def _get_ansible_core_path(
     download_dir: StrPath, ansible_core_version: PypiVer | str
 ) -> Path:
     flog = mlog.fields(func="_get_ansible_core_path")
-    async with aiohttp.ClientSession() as aio_session:
+    async with aiohttp.ClientSession(trust_env=True) as aio_session:
         ansible_core_tarball = Path(
             await get_ansible_core(
                 aio_session, str(ansible_core_version), str(download_dir)

src/antsibull_build/changelog.py

@@ -358,7 +358,7 @@ async def collect_changelogs(
 ):
     lib_ctx = app_context.lib_ctx.get()
     with tempfile.TemporaryDirectory() as tmp_dir:
-        async with aiohttp.ClientSession() as aio_session:
+        async with aiohttp.ClientSession(trust_env=True) as aio_session:
             if galaxy_context is None:
                 galaxy_context = await GalaxyContext.create(aio_session)
             async with asyncio_pool.AioPool(size=lib_ctx.thread_max) as pool:

src/antsibull_build/utils/galaxy.py

@@ -15,5 +15,5 @@ async def create_galaxy_context() -> GalaxyContext:
     """
     Create a Galaxy context.
     """
-    async with aiohttp.ClientSession() as aio_session:
+    async with aiohttp.ClientSession(trust_env=True) as aio_session:
         return await GalaxyContext.create(aio_session)

src/antsibull_build/versions.py

@@ -175,7 +175,7 @@ async def get_version_info(
     requestors = {}
     lib_ctx = app_context.lib_ctx.get()
     async with (
-        aiohttp.ClientSession() as aio_session,
+        aiohttp.ClientSession(trust_env=True) as aio_session,
         asyncio_pool.AioPool(size=lib_ctx.thread_max) as pool,
     ):
         pypi_client = AnsibleCorePyPiClient(