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feat(readTree): Support scoped import arguments

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This makes it possible to override Nix builtins within a readTree
structure. Why would you want to do that, you might ask? Well ...

Change-Id: Icc9cb32e5db4a2eba370cf81769c642d237d4937
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3499
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
This commit is contained in:
Vincent Ambo 2021-09-08 18:27:37 +03:00 • committed by tazjin
parent aedde913d1
commit b1f4b530ec
2 changed files with 15 additions and 9 deletions
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nix/readTree/README.md
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@ -77,6 +77,9 @@ the tree as empty nodes (`{}`).
* `filter`: (optional) A function to filter the argument set on each
import based on the location in the tree. This can be used to, for
example, implement a "visibility" system inside of a tree.
* `scopedArgs`: (optional) An argument set that is passed to all
imported files via `builtins.scopedImport`. This will forcefully
override the given values in the import scope, use with care!
The package headers in this repository follow the form `{ pkgs, ... }:` where
`pkgs` is a fixed-point of the entire package tree (see the `default.nix` at the