The most intriguing feature of nixos for me is being able to have multiple versions of the same software installed. I just got nixos running as a virtualbox guest and that's the first thing I tried and it didn't work. I installed emacs 23:
nix-env -i emacs-23.2 and that worked just fine. Then I tried to install emacs 22: nix-env --preserve-installed -i emacs-22.3 But I got errors: Collission between '/nix/store/sdfx8jya9ijci7d7xm70fk7wv8zw5z3v-emacs-22.3/bin/b2m' and '/nix/store/nhkyz3ls880i21319wmr17qyrgzzmn98-emacs-23.2/bin/b2m'. Suggested solution: use 'nix-env --set-flag priority NUMBER PKGNAME' to change the priority of one of the conflicting packages. builder for '/nix/store/wj8jgvrjaf6ki5qs2kcg3kfbhnccjppr-user-environment.drv' failed with exit code 255 error: build of '/nix/store/wj8jgvrjaf6ki5qs2kcg3kfbhnccjppr-user-environment.drv' failed I honestly would be fine without b2m, but I'm confused as to what is going on and how to resolve it. Bryan _______________________________________________ nix-dev mailing list [email protected] https://mail.cs.uu.nl/mailman/listinfo/nix-dev
