This was introduced in #228349, but doesn't seem necessary to build for pkgsMusl.
In fact the patch itself seems to be very specific about a stripped down icu
package in Alpine Linux, which does not apply to nixpkgs.
This makes it obvious that the required argument muslPatches must be passed when
creating a new version file.
Pure refactor, not changing any derivations.
The recommended [1] structure for a package regarding versioning is to have each
version in a separate file. This commit just mechanically copies code around
without any changes.
Pure refactor, not changing any derivations.
[1]: pkgs/README.md
