2017-02-24 7:54 GMT+01:00 Freddy Rietdijk <freddyrietd...@fridh.nl>: > All the packages that explicitly need Python 2 are already pinned to use > Python 2. That was a matter of converting, testing, and moving on. About 150 > packages were pinned to `python2`. That is why a `python = python3` won't > break anything (or nearly nothing) in Nixpkgs anymore. > > Explicitly pinning to `python3` means converting every expression that has > `python` to `python3`. No breakage should occur anymore, except when one > makes a mistake in converting expressions only partially. There are about > 1000 packages that need to be converted.
I've generated a list of packages affected by the rename (the program is also attached): https://gist.github.com/bendlas/5115ec6ada57bcd05d8e926358109902 For immediate referrers of python2 (within the set top-level attrs affected by the rename), your estimate of 1000 is about right: I'm counting 917 packages. The full set of "direct" referrers counts about 3100, though, if you include packages that got transitively changed via a package, that's not yet listed in `nix-env -qa`. This includes many packages, depending on the same unattributed derivation, but even just the immediate unattributed referrers, count around 1200. Those counts include `pythonPackages` and a couple of other package sets, though. > The best method I can think of is searching for all the files that contain > `python` without leading and trailing alphanumerical characters. Those can > typically be converted to `python3`. Exceptions are > `pkgs/top-level/python-packages.nix`, > `pkgs/development/interpreters/python`, `pkgs/development/python-modules/*` > and when the `python` argument is overriden in, say, `all-packages.nix`. > Another exception could be `python = python3.withPackages(...)` but I think > that is rare. I'll try a sed script to rename all those simple `callPackage` cases, based on my list. We'll see how many remain after that. If anybody wants to get clever with hnix, this would be an excellent opportunity ;-) _______________________________________________ nix-dev mailing list nix-dev@lists.science.uu.nl http://lists.science.uu.nl/mailman/listinfo/nix-dev