No such thing in CKAN metadata. ksp_version doesn't co-exist with ksp_version_min or ksp_version_max.

What do you mean?
Many .version files have all "KSP_VERSION", "KSP_VERSION_MIN", "KSP_VERSION_MAX"

KSP-AVC is not the same as CKAN.
KSP-AVC has what you describe (in fact requires it if you want to use min/max and interpret the spec strictly).
CKAN does not.

https://github.com/KSP-CKAN/CKAN/blob/master/Spec.md#ksp_version_min

ksp_version_min
The minimum version of KSP the mod requires to operate correctly. Same format as ksp_version. It is an error to include both this and the ksp_version field.

ksp_version_max
The maximum version of KSP the mod requires to operate correctly. Same format as ksp_version. It is an error to include both this and the ksp_version field.

Several of our sources for version info have this distinction, so it might be good to add it.

Recently couple of mods having "KSP_VERSION" have been updated their CKAN info to "KSP_VERSION_MIN" and "KSP_VERSION_MAX" instead, I'd think this issue is related.

Suggestion: for mods having"KSP_VERSION", automatically replace that with "KSP_VERSION_MIN" and "KSP_VERSION_MAX" with identical version number as per "KSP_VERSION", unifying these meta data.

Example: https://github.com/KSP-CKAN/CKAN-meta/pull/2238/files

As noted, this request does not reflect how CKAN metadata works. Making it work this way would make things much more confusing. Closing.