You can find example logs here https://travis-ci.org/pSub/nix/branches. Look at the builds for the master branch. The first uses the standard environment, the second the trusty environment.

Hm, what do we need this for, given that we're already building Nix in Hydra?

It can build and run tests on PRs in this repo, which Hydra can't (yet?) do

Yeah this seems like a good idea as a stop gap until hydra-github integration is working (I think @shlevy is pretty close).

Anything that prevents this from being merged? This could test PRs until hydra-github integration is ready.

I think it would be better to run as many of the tests/build attributes in http://hydra.nixos.org/eval/1275169#tabs-still-fail

@copumpkin @domenkozar Anything blocking this?

We should build Nix from this source, not fetch the stable version. For starters, but really we should run the tests as Hydra does it.

@domenkozar I'm happy to make a new PR. How does Hydra do it? Can you link me to those tests?

@siddharthist basically run https://github.com/NixOS/nix/blob/master/release.nix

Does Travis actually succeed in building Nix? I'm always getting weird errors on builds:

g++: internal compiler error: Killed (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make: *** [mk/patterns.mk:2: src/libexpr/eval.o] Error 4
make: *** Waiting for unfinished jobs....
build time elapsed:  0m0.104s 0m0.038s 2m26.154s 0m33.986s
builder for ‘/nix/store/vzqs399phx74y85l3yxnqhcl68xjphm6-nix-1.12pre1234_abcdef.drv’ failed with exit code 2

https://travis-ci.org/matthewbauer/nix/jobs/146402147

#1152 replaces this PR by using the now builtin Travis Nix integration