added comment and changelog entry

rust/stackablectl/CHANGELOG.md

@@ -7,12 +7,14 @@ All notable changes to this project will be documented in this file.
 ### Added
 
 - Add new argument `--release` that allows installing a specific version of a demo or stack ([#340]).
+- Add new argument `--chart-source` so that operator charts can be pulled either from an OCI registry (the default) or from a Nexus repository ([#344]).
 
 ### Removed
 
 - Remove argument `--offline` that was not implemented yet ([#340]).
 
 [#340]: https://github.com/stackabletech/stackable-cockpit/pull/340
+[#344]: https://github.com/stackabletech/stackable-cockpit/pull/344
 
 ## [24.11.1] - 2024-11-20
 

rust/stackablectl/src/cli/mod.rs

@@ -298,11 +298,16 @@ pub enum ChartSourceTypeArg {
     #[default]
     OCI,
 
-    /// Nexus repositories: resolution (dev, test, stable) is based on the version and thus may be operator-specific
+    /// Nexus repositories: resolution (dev, test, stable) is based on the version and thus will be operator-specific
     Repo,
 }
 
 impl From<ChartSourceTypeArg> for ChartSourceType {
+    /// Resolves the enum used by clap/arg-resolution to the core type used in
+    /// stackable-cockpit. For the (Nexus-)repo case this core type cannot be
+    /// decorated with meaningful information as that would be operator-specific
+    /// i.e. we cannot resolve *which* Nexus repo to use until we have inspected
+    /// the operator version. Hence just a simple mapping.
     fn from(cli_enum: ChartSourceTypeArg) -> Self {
         match cli_enum {
             ChartSourceTypeArg::OCI => ChartSourceType::OCI,