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6 commits

Author SHA1 Message Date
Eelco Dolstra
0c62b4ad0f Represent 'follows' inputs explicitly in the lock file 
This fixes an issue where lockfile generation was not idempotent:
after updating a lockfile, a "follows" node would end up pointing to a
new copy of the node, rather than to the original node.
 2020-06-11 14:40:21 +02:00
Eelco Dolstra
950b46821f Remove TreeInfo 
The attributes previously stored in TreeInfo (narHash, revCount,
lastModified) are now stored in Input. This makes it less arbitrary
what attributes are stored where.

As a result, the lock file format has changed. An entry like

    "info": {
      "lastModified": 1585405475,
      "narHash": "sha256-bESW0n4KgPmZ0luxvwJ+UyATrC6iIltVCsGdLiphVeE="
    },
    "locked": {
      "owner": "NixOS",
      "repo": "nixpkgs",
      "rev": "b88ff468e9850410070d4e0ccd68c7011f15b2be",
      "type": "github"
    },

is now stored as

    "locked": {
      "owner": "NixOS",
      "repo": "nixpkgs",
      "rev": "b88ff468e9850410070d4e0ccd68c7011f15b2be",
      "type": "github",
      "lastModified": 1585405475,
      "narHash": "sha256-bESW0n4KgPmZ0luxvwJ+UyATrC6iIltVCsGdLiphVeE="
    },

The 'Input' class is now a dumb set of attributes. All the fetcher
implementations subclass InputScheme, not Input. This simplifies the
API.

Also, fix substitution of flake inputs. This was broken since lazy
flake fetching started using fetchTree internally.
 2020-05-30 00:44:11 +02:00
Eelco Dolstra
e5ea01c1a8
Remove flake 'edition' field 
Future editions of flakes or the Nix language can be supported by
renaming flake.nix (e.g. flake-v2.nix). This avoids a bootstrap
problem where we don't know which grammar to use to parse
flake*.nix. It also allows a project to support multiple flake
editions, in theory.
 2020-04-10 10:24:09 +02:00
Eelco Dolstra
a6ff66b658 Respect the narHash attribute in more input types 
call-flake.nix now passes node.info.narHash to fetchTree. This ensures
that dirty Git trees work even in pure mode.
 2020-04-02 19:04:33 +02:00
Eelco Dolstra
ae9119167e Change the lock file to a graph 
This enables support for cycles between flakes.
 2020-03-12 22:06:57 +01:00
Eelco Dolstra
e188fe7c6d Move call-flake.nix into libexpr 2020-03-11 17:04:51 +01:00
Renamed from corepkgs/call-flake.nix (Browse further)