lix-project/flake-compat
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Add support for lock file version 5

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Eelco Dolstra 2020-03-31 16:05:00 +02:00
parent c7b5800e53
commit 6c21ad2740
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1 changed files with 31 additions and 6 deletions
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37
default.nix
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@ -9,7 +9,9 @@
let
lockFile = builtins.fromJSON (builtins.readFile (src + "/flake.lock"));
lockFilePath = src + "/flake.lock";
lockFile = builtins.fromJSON (builtins.readFile lockFilePath);
fetchTree =
{ info, locked, ... }:
@ -24,13 +26,13 @@ let
# FIXME: add Git, Mercurial, tarball inputs.
throw "flake input has unsupported input type '${locked.type}'";
callFlake = flakeSrc: locks:
callFlake4 = flakeSrc: locks:
let
flake = import (flakeSrc + "/flake.nix");
inputs = builtins.mapAttrs (n: v:
if v.flake or true
then callFlake (fetchTree v) v.inputs
then callFlake4 (fetchTree v) v.inputs
else fetchTree v) locks;
outputs = flakeSrc // (flake.outputs (inputs // {self = outputs;}));
@ -67,11 +69,34 @@ let
pad = s: if builtins.stringLength s < 2 then "0" + s else s;
in "${toString y'}${pad (toString m)}${pad (toString d)}${pad (toString hours)}${pad (toString minutes)}${pad (toString seconds)}";
result = callFlake src' (lockFile.inputs);
allNodes =
builtins.mapAttrs
(key: node:
let
sourceInfo = if key == lockFile.root then src' else fetchTree { info = node.info; locked = (removeAttrs node.locked ["dir"]); };
subdir = if key == lockFile.root then "" else node.locked.dir or "";
flake = import (sourceInfo + (if subdir != "" then "/" else "") + subdir + "/flake.nix");
inputs = builtins.mapAttrs (inputName: key: allNodes.${key}) (node.inputs or {});
outputs = flake.outputs (inputs // { self = result; });
result = outputs // sourceInfo // { inherit inputs; inherit outputs; inherit sourceInfo; };
in
if node.flake or true then
assert flake.edition or flake.epoch or 0 == 201909;
assert builtins.isFunction flake.outputs;
result
else
sourceInfo
)
lockFile.nodes;
result =
if lockFile.version == 4
then callFlake4 src' (lockFile.inputs)
else if lockFile.version == 5
then allNodes.${lockFile.root}
else throw "lock file '${lockFilePath}' has unsupported version ${toString lockFile.version}";
in
assert lockFile.version == 4;
rec {
defaultNix =
result