Fix duplicate channels added by channel pins (#449)

* Fix duplicate channels added by channel pins * add news --------- Co-authored-by: jaimergp <[email protected]>
conda · Mar 19, 2024 · 055d5f9 · 055d5f9
1 parent a5b60d7
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diff --git a/conda_libmamba_solver/solver.py b/conda_libmamba_solver/solver.py
@@ -198,7 +198,7 @@ def solve_final_state(
                     all_channels.append(channel)
         all_channels.extend(in_state.maybe_free_channel())
 
-        all_channels = tuple(all_channels)
+        all_channels = tuple(dict.fromkeys(all_channels))
         with Spinner(
             self._spinner_msg_metadata(all_channels, conda_bld_channels=conda_bld_channels),
             enabled=not context.verbosity and not context.quiet,

diff --git a/news/449-dup-channels b/news/449-dup-channels
@@ -0,0 +1,19 @@
+### Enhancements
+
+* <news item>
+
+### Bug fixes
+
+* Avoid duplicate channel listing when using channel-pinned specs like `channel::package`. (#449)
+
+### Deprecations
+
+* <news item>
+
+### Docs
+
+* <news item>
+
+### Other
+
+* <news item>