Populate README with channels from conda_build_config.yaml

README.md

@@ -96,10 +96,6 @@ out of by specifying `--without-anaconda-token`, as such execpted package upload
    ```
    github:
      user_or_org: YOUR_GITHUB_USER_OR_ORG
-   channels:
-     targets:
-     -
-       - YOUR_ANACONDA_CHANNEL
    ```
 
 6. **Re-render the feedstock:** ``conda smithy rerender --feedstock_directory ./foo-feedstock``

conda_smithy/cli.py

@@ -141,7 +141,7 @@ def __call__(self, args):
         )
 
         print(
-            "\nRepository created, please edit conda-forge.yml to configure the upload channels\n"
+            "\nRepository created, please edit recipe/conda_build_config.yaml to configure the upload channels\n"
             "and afterwards call 'conda smithy register-github'"
         )
 

conda_smithy/configure_feedstock.py

@@ -711,6 +711,9 @@ def _render_ci_provider(
             if os.path.exists(_recipe_cbc):
                 os.rename(_recipe_cbc, _recipe_cbc + ".conda.smithy.bak")
 
+            channel_sources = migrated_combined_variant_spec.get(
+                "channel_sources", [""]
+            )[0].split(",")
             metas = conda_build.api.render(
                 os.path.join(forge_dir, forge_config["recipe_dir"]),
                 platform=platform,
@@ -720,9 +723,7 @@ def _render_ci_provider(
                 permit_undefined_jinja=True,
                 finalize=False,
                 bypass_env_check=True,
-                channel_urls=forge_config.get("channels", {}).get(
-                    "sources", []
-                ),
+                channel_urls=channel_sources,
             )
         finally:
             if os.path.exists(_recipe_cbc + ".conda.smithy.bak"):
@@ -1584,11 +1585,23 @@ def render_README(jinja_env, forge_config, forge_dir, render_info=None):
 
     ci_support_path = os.path.join(forge_dir, ".ci_support")
     variants = []
+    channel_targets = []
     if os.path.exists(ci_support_path):
         for filename in os.listdir(ci_support_path):
             if filename.endswith(".yaml"):
                 variant_name, _ = os.path.splitext(filename)
                 variants.append(variant_name)
+                with open(os.path.join(ci_support_path, filename)) as fh:
+                    data = yaml.safe_load(fh)
+                    for channel in data.get("channel_targets", ()):
+                        # channel_targets are in the form of "channel_name label"
+                        channel_targets.append(channel.split(" "))
+    if not channel_targets:
+        # default to conda-forge if no channel_targets are specified (shouldn't happen)
+        channel_targets = ["conda-forge main"]
+    else:
+        # de-duplicate in-order
+        channel_targets = list(dict.fromkeys(channel_targets))
 
     subpackages_metas = OrderedDict((meta.name(), meta) for meta in metas)
     subpackages_about = [(package_name, package_about)]
@@ -1620,6 +1633,7 @@ def render_README(jinja_env, forge_config, forge_dir, render_info=None):
             )
         )
     )
+    forge_config["channel_targets"] = channel_targets
 
     if forge_config["azure"].get("build_id") is None:
 
@@ -1795,10 +1809,6 @@ def _load_forge_config(forge_dir, exclusive_config_file, forge_yml=None):
         "max_py_ver": "37",
         "min_r_ver": "34",
         "max_r_ver": "34",
-        "channels": {
-            "sources": ["conda-forge"],
-            "targets": [["conda-forge", "main"]],
-        },
         "github": {
             "user_or_org": "conda-forge",
             "repo_name": "",
@@ -1869,6 +1879,11 @@ def _load_forge_config(forge_dir, exclusive_config_file, forge_yml=None):
                 "Setting docker image in conda-forge.yml is removed now."
                 " Use conda_build_config.yaml instead"
             )
+        if file_config.get("channels"):
+            raise ValueError(
+                "Setting channels in conda-forge.yml is removed now."
+                " Use conda_build_config.yaml instead"
+            )
 
         for plat in ["linux", "osx", "win"]:
             if config["azure"]["timeout_minutes"] is not None:

conda_smithy/templates/README.md.tmpl

@@ -1,4 +1,4 @@
-{%- set channel_name = channels.targets[0][0] -%}
+{%- set channel_name = channel_targets[0] -%}
 {#-
 # -*- mode: jinja -*-
 -#}

news/1752-readme-channels.rst

@@ -0,0 +1,23 @@
+**Added:**
+
+* <news item>
+
+**Changed:**
+
+* Use the channels defined in `conda_build_config.yaml` (instead of those in `conda-forge.yml`) to render `README.md`. (#897 via #752)
+
+**Deprecated:**
+
+* <news item>
+
+**Removed:**
+
+* <news item>
+
+**Fixed:**
+
+* <news item>
+
+**Security:**
+
+* <news item>

tests/test_configure_feedstock.py

@@ -743,19 +743,15 @@ def test_conda_forge_yaml_empty(config_yaml):
         ),
     )
 
-    assert ["conda-forge", "main"] in load_forge_config()["channels"][
-        "targets"
-    ]
+    assert load_forge_config()["recipe_dir"] == "recipe"
 
     os.unlink(os.path.join(config_yaml, "conda-forge.yml"))
     with pytest.raises(RuntimeError):
         load_forge_config()
 
     with open(os.path.join(config_yaml, "conda-forge.yml"), "w"):
         pass
-    assert ["conda-forge", "main"] in load_forge_config()["channels"][
-        "targets"
-    ]
+    assert load_forge_config()["recipe_dir"] == "recipe"
 
 
 def test_noarch_platforms_bad_yaml(config_yaml):
@@ -797,9 +793,7 @@ def test_forge_yml_alt_path(config_yaml):
     with pytest.raises(RuntimeError):
         load_forge_config(None)
 
-    assert ["conda-forge", "main"] in load_forge_config(forge_yml_alt)[
-        "channels"
-    ]["targets"]
+    assert load_forge_config(forge_yml_alt)["recipe_dir"] == "recipe"
 
 
 def test_cos7_env_render(py_recipe, jinja_env):