I like the idea of this extension, that allows you to create shortcuts for URLs you use often, e.g. cloning.
[extensions] hgext.schemes= [schemes] ups = ssh://my-uarch-performance-simulator/...
However, it is something of a no-sale when I saw that the URL was notexpanded in the clone:
> hg clone ups: u ... > cd u > hg paths default = ups:// >
Or in WorkDir/.hg/hgrc
[paths] default = ups:
PRO: when the remote repository changges location, this *might* allow you to change the scheme URL shorthand in hgrc, and have things work in the possibly multiple clones you have outstanding.
CON: it loses some documentation. If I got run over by a beer truck, my replacement might have trouble finding where it was from. Worse, if a repo was restored from backup (particularly if people keep branches as repos), and my home directory with the ~/.hgrc enabling SchemesExtension was not present.
I'm not sure what I would like. Possibly always expand the shorthand. Possibly record the shorthand with the long path as a comment:
[paths] default = ups: # ssh://my-uarch-performance-simulator/...
> hg paths default = ups:// # ssh://my-uarch-performance-simulator/...
TBD: move this to my wiki Category:VCS.