3 - Use nix from nixpkgs rather than from PATH. This is needed when the nix in
4 PATH is nixUnstable-3.0pre20201020_e0ca98c or later because nix commit
5 787469c7b66aec12ab6847e7db2cdc8aef5c325e removed <nix/unpack-channel.nix>.
8 ## [3.0.3] - 2021-05-20
10 - Don't pass --experimental-features to old nix versions
13 ## [3.0.2] - 2021-02-16
15 - Don't rely on experimental-features=nix-command in system nix.conf
18 ## [3.0.1] - 2020-08-04
20 - Make tests fast again when using recent git-cache with backoff
23 ## [3.0.0] - 2020-07-10
25 - Moved git cache out to a separate library
28 ## [2.1.1] - 2020-07-01
30 - Pin faster: Skip archive comparison if git rev is unchanged
33 ## [2.1.0] - 2020-06-30
35 - Specify profile path with --profile
38 ## [2.0.0] - 2020-06-17
40 - Config sections must now specify their type explicitly
43 - type=symlink search paths
46 ## [1.5.1] - 2020-06-17
48 - Support old mypy version 0.701 (by working around its bugs)
49 - Version numbers are now semver
54 - Support log.showSignature