Capistrano 2.0.0 on Gentoo at last

Capistrano 2.0.0 has been released for just over a month, but there hadn’t been much activity for it on the Gentoo front.

The reason for this is that we had 1.4.x in the tree as SLOT=0, and the prelease 1.99.x also in the tree (but package.masked) as SLOT=0 as well. The real problem is that they were actually intended by upstream to be installable at the same time, so you could have projects on the same machine either version. The logical action would be to slot it accordingly, but we would run into the same issues we had with rails because of a file collision with both slots wanting to control /usr/bin/cap.

We had originally thought to do another eselect module again, but it turns out that upstream was one step ahead of us. /usr/bin/cap actually allows for running either version. Check it:

nichoj@metaverse ~ $ cap --version
Capistrano v2.0.0
nichoj@metaverse ~ $ cap _1.4.1_ --version
Capistrano v1.4.1
nichoj@metaverse ~ $ cap _2.0.0_ --version
Capistrano v2.0.0

What we ended up having to do was pull out /usr/bin/cap into a separate package, capistrano-launcher. We used appropriately blockers again to have a sane upgrade path.

I also had to do a slotmove of the existing versions, putting 1.4.x in SLOT=1 and 1.99.x into SLOT=2. This was as easy as updating the ebuilds, and adding the following to ${PORTDIR}/profiles/updates/3Q-2007:

slotmove =dev-ruby/capistrano-1.4* 0 1
slotmove =dev-ruby/capistrano-1.9* 0 2

Without further ado, make with the emerging.

emerge -atv =capistrano-1* =capistrano-2* # get both versions
emerge -atv capistrano # or just the latest