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| author | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2014-05-26T15·02+0200 |
|---|---|---|
| committer | Eelco Dolstra <eelco.dolstra@logicblox.com> | 2014-05-26T15·02+0200 |
| commit | 62a6eeb1f3da0a5954ad2da54c454eb7fc1c6e5d (patch) | |
| tree | cb1fec96ce5ae6ad830a4afe65578210c0e1c778 /tests/lang | |
| parent | 39d72640c2459dc2fa689bfe8b756ee193f7b98a (diff) | |
Make the Nix search path declarative
Nix search path lookups like <nixpkgs> are now desugared to ‘findFile
nixPath <nixpkgs>’, where ‘findFile’ is a new primop. Thus you can
override the search path simply by saying
let
nixPath = [ { prefix = "nixpkgs"; path = "/my-nixpkgs"; } ];
in ... <nixpkgs> ...
In conjunction with ‘scopedImport’ (commit
c273c15cb13bb86420dda1e5341a4e19517532b5), the Nix search path can be
propagated across imports, e.g.
let
overrides = {
nixPath = [ ... ] ++ builtins.nixPath;
import = fn: scopedImport overrides fn;
scopedImport = attrs: fn: scopedImport (overrides // attrs) fn;
builtins = builtins // overrides;
};
in scopedImport overrides ./nixos
Diffstat (limited to 'tests/lang')
| -rw-r--r-- | tests/lang/eval-okay-search-path.exp | 2 | ||||
| -rw-r--r-- | tests/lang/eval-okay-search-path.nix | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/tests/lang/eval-okay-search-path.exp b/tests/lang/eval-okay-search-path.exp index d0bc8c5e86b2..ad05904ba1f7 100644 --- a/tests/lang/eval-okay-search-path.exp +++ b/tests/lang/eval-okay-search-path.exp @@ -1 +1 @@ -"abcc" +"abcca" diff --git a/tests/lang/eval-okay-search-path.nix b/tests/lang/eval-okay-search-path.nix index 501d5f3f4804..e0f433fec634 100644 --- a/tests/lang/eval-okay-search-path.nix +++ b/tests/lang/eval-okay-search-path.nix @@ -8,3 +8,4 @@ assert length (filter (x: x.prefix == "nix") nixPath) == 1; assert length (filter (x: baseNameOf x.path == "dir4") nixPath) == 1; import <a.nix> + import <b.nix> + import <c.nix> + import <dir5/c.nix> + + (let nixPath = [ { path = ./dir1; } { path = ./dir2; } ]; in import <a.nix>) |