Commit graph

4 commits

Author SHA1 Message Date
Eelco Dolstra c7af247bea Path fetcher: Fix store path name 2020-04-22 10:15:32 +02:00
Eelco Dolstra 26aeeb7653 Add FIXME
(cherry picked from commit 2f494531b7)
2020-04-07 09:09:43 +02:00
Eelco Dolstra a6dfa3cb85 PathInput: Add some methods
(cherry picked from commit 78ad5b3d91)
2020-04-07 09:09:43 +02:00
Eelco Dolstra 670feb000a Add 'path' fetcher
This fetchers copies a plain directory (i.e. not a Git/Mercurial
repository) to the store (or does nothing if the path is already a
store path).

One use case is to pin the 'nixpkgs' flake used to build the current
NixOS system, and prevent it from being garbage-collected, via a
system registry entry like this:

  {
      "from": {
          "id": "nixpkgs",
          "type": "indirect"
      },
      "to": {
          "type": "path",
          "path": "/nix/store/rralhl3wj4rdwzjn16g7d93mibvlr521-source",
          "lastModified": 1585388205,
          "rev": "b0c285807d6a9f1b7562ec417c24fa1a30ecc31a"
      },
      "exact": true
  }

Note the fake "lastModified" and "rev" attributes that ensure that the
flake gives the same evaluation results as the corresponding
Git/GitHub inputs.

(cherry picked from commit 12f9379123)
2020-04-07 09:08:51 +02:00