7 commits

Author	SHA1	Message	Date
Eelco Dolstra	272b58220d	Enforce use of immutable flakes in pure mode ... ... plus a temporary hack to allow impure flakes at top-level for the default installation source.	2019-02-12 21:07:48 +01:00
Eelco Dolstra	ba05f29838	nix: Enable pure mode by default ... We want to encourage a brave new world of hermetic evaluation for source-level reproducibility, so flakes should not poke around in the filesystem outside of their explicit dependencies. Note that the default installation source remains impure in that it can refer to mutable flakes, so "nix build nixpkgs.hello" still works (and fetches the latest nixpkgs, unless it has been pinned by the user). A problem with pure evaluation is that builtins.currentSystem is unavailable. For the moment, I've hard-coded "x86_64-linux" in the nixpkgs flake. Eventually, "system" should be a flake function argument.	2019-02-12 20:35:03 +01:00
Eelco Dolstra	91a6a47b0e	Improve flake references	2019-02-12 18:23:11 +01:00
Eelco Dolstra	52419f8db3	Add flake registry ... This will eventually be moved to nixos.org.	2019-02-11 13:01:39 +01:00
Eelco Dolstra	dcae46ab14	Add github URIs ... For example, github:edolstra/dwarffs is more-or-less equivalent to https://github.com/edolstra/dwarffs.git. It's a much faster way to get GitHub repositories: it fetches tarballs rather than entire Git repositories. It also allows fetching specific revisions by hash without specifying a ref (e.g. a branch name): github:edolstra/dwarffs/41c0c1bf292ea3ac3858ff393b49ca1123dbd553	2019-02-11 12:05:17 +01:00
Eelco Dolstra	ef4cf4e681	Introduce flake URIs	2019-02-11 12:05:13 +01:00
Eelco Dolstra	7a5cf31060	Initial flake support	2019-02-11 12:00:13 +01:00