Fix channels_remap handling in extra_envs configuration

CONSTRUCT.md

@@ -67,7 +67,7 @@ See notes in `channels_remap` for details about local channels.
 _required:_ no<br/>
 _type:_ list<br/>
 
-A list of `src/dest` channel pairs. When building the installer, conda will
+A list of `src/dest` channel URL pairs. When building the installer, conda will
 use the `src` channels to solve and fetch the packages. However, the resulting
 installation will see the packages as coming from the `dest` equivalent.
 This allows an installer to be built against a different set of channels than

constructor/construct.py

@@ -42,7 +42,7 @@
 '''),
 
     ('channels_remap',         False, list, '''
-A list of `src/dest` channel pairs. When building the installer, conda will
+A list of `src/dest` channel URL pairs. When building the installer, conda will
 use the `src` channels to solve and fetch the packages. However, the resulting
 installation will see the packages as coming from the `dest` equivalent.
 This allows an installer to be built against a different set of channels than

constructor/main.py

@@ -149,10 +149,16 @@ def main_build(dir_path, output_dir='.', platform=cc_platform,
         if env_name in ("base", "root"):
             raise ValueError(f"Environment name '{env_name}' cannot be used")
         for config_key, value in env_config.copy().items():
-            if isinstance(value, (list, tuple)):
-                env_config[config_key] = [val.strip() for val in value]
             if config_key == "environment_file":
                 env_config[config_key] = abspath(join(dir_path, value))
+            elif config_key == "channels_remap":
+                env_config[config_key] = [
+                    {"src": item["src"].strip(), "dest": "dest".strip()} for item in value
+                ]
+            elif isinstance(value, (list, tuple)):
+                env_config[config_key] = [val.strip() for val in value]
+            else:
+                env_config[config_key] = value
 
     try:
         exe_name, exe_version = identify_conda_exe(info.get("_conda_exe"))
@@ -418,7 +424,8 @@ def main():
 easiest way to obtain one is to install the 'conda-standalone' package.
 Alternatively, you can download an executable manually and supply its
 path with the --conda-exe argument. Self-contained executables can be
-downloaded from https://repo.anaconda.com/pkgs/misc/conda-execs/""".lstrip())
+downloaded from https://repo.anaconda.com/pkgs/misc/conda-execs/ and/or
+https://github.com/conda/conda-standalone/releases""".lstrip())
 
     out_dir = normalize_path(args.output_dir)
     main_build(dir_path, output_dir=out_dir, platform=args.platform,

docs/source/construct-yaml.md

@@ -67,7 +67,7 @@ See notes in `channels_remap` for details about local channels.
 _required:_ no<br/>
 _type:_ list<br/>
 
-A list of `src/dest` channel pairs. When building the installer, conda will
+A list of `src/dest` channel URL pairs. When building the installer, conda will
 use the `src` channels to solve and fetch the packages. However, the resulting
 installation will see the packages as coming from the `dest` equivalent.
 This allows an installer to be built against a different set of channels than

examples/extra_envs/construct.yaml

@@ -2,11 +2,11 @@ name: ExtraEnvs
 version: X
 installer_type: all
 channels:
-  - http://repo.anaconda.com/pkgs/main/
+  - https://conda.anaconda.org/conda-forge
 specs:
   - python=3.9
   - conda # conda is required for extra_envs
-  - console_shortcut # [win]
+  - miniforge_console_shortcut # [win]
 exclude:  # [unix]
   - tk  # [unix]
 extra_envs:
@@ -16,6 +16,9 @@ extra_envs:
       - pip
     channels:
       - conda-forge
+    channels_remap:
+      - src: https://conda.anaconda.org/conda-forge
+        dest: conda-forge
     exclude:
       - setuptools
   dav1d:

news/808-fix-env-channels-remap

@@ -0,0 +1,19 @@
+### Enhancements
+
+* <news item>
+
+### Bug fixes
+
+* Fix `channels_remap` sanitization when included as part of an item in `extra_envs`. (#808)
+
+### Deprecations
+
+* <news item>
+
+### Docs
+
+* Clarify that channels must be passed as URLs in `channels_remap`. (#808)
+
+### Other
+
+* Mention `conda/conda-standalone` repository as a source for conda-standalone downloads in relevant error messages. (#808)

tests/test_examples.py

@@ -219,7 +219,7 @@ def _sentinel_file_checks(example_path, install_dir):
         if (example_path / script).exists() and not (install_dir / sentinel).exists():
             raise AssertionError(
                 f"Sentinel file for {script_prefix}_install not found! "
-                f"{install_dir} contents:\n" + "\n".join(sorted(install_dir.iterdir()))
+                f"{install_dir} contents:\n" + "\n".join(sorted(map(str, install_dir.iterdir())))
             )
 
 
@@ -511,12 +511,12 @@ def test_example_signing(tmp_path, request):
 
 @pytest.mark.skipif(sys.platform != "win32", reason="Windows only")
 @pytest.mark.skipif(
-        not shutil.which("azuresigntool") and not os.environ.get("AZURE_SIGNTOOL_PATH"),
-        reason="AzureSignTool not available"
+    not shutil.which("azuresigntool") and not os.environ.get("AZURE_SIGNTOOL_PATH"),
+    reason="AzureSignTool not available",
 )
 @pytest.mark.parametrize(
-        "auth_method",
-        os.environ.get("AZURE_SIGNTOOL_TEST_AUTH_METHODS", "token,secret").split(","),
+    "auth_method",
+    os.environ.get("AZURE_SIGNTOOL_TEST_AUTH_METHODS", "token,secret").split(","),
 )
 def test_azure_signtool(tmp_path, request, monkeypatch, auth_method):
     """Test signing installers with AzureSignTool.