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Docs: Explain why import nixpkgs works in flakes

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This commit is contained in:
Joachim Breitner 2023-03-28 09:35:49 +02:00
parent 56dc6ed841
commit 605c8f7789
2 changed files with 10 additions and 3 deletions
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11
src/libexpr/primops.cc
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@ -254,9 +254,14 @@ static RegisterPrimOp primop_import({
.args = {"path"}, .args = {"path"},
// TODO turn "normal path values" into link below // TODO turn "normal path values" into link below
.doc = R"( .doc = R"(
Load, parse and return the Nix expression in the file *path*. If Load, parse and return the Nix expression in the file *path*.
*path* is a directory, the file ` default.nix ` in that directory
is loaded. Evaluation aborts if the file doesn’t exist or contains The value *path* is conveted to a string as described in `builtins.toString`.
If *path* is a directory, the file ` default.nix ` in that directory
is loaded.
Evaluation aborts if the file doesn’t exist or contains
an incorrect Nix expression. `import` implements Nix’s module an incorrect Nix expression. `import` implements Nix’s module
system: you can put any Nix expression (such as a set or a system: you can put any Nix expression (such as a set or a
function) in a separate file, and use it from Nix expressions in function) in a separate file, and use it from Nix expressions in

2
src/nix/flake.md
View file

@ -317,6 +317,8 @@ The following attributes are supported in `flake.nix`:
also contains some metadata about the inputs. These are: also contains some metadata about the inputs. These are:
* `outPath`: The path in the Nix store of the flake's source tree. * `outPath`: The path in the Nix store of the flake's source tree.
This way, the attribute set can be passed to `import` as if it was a path,
as in the example above (`import nixpkgs`).
* `rev`: The commit hash of the flake's repository, if applicable. * `rev`: The commit hash of the flake's repository, if applicable.