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haskell.nix/docs/dev/nix-tools-pin.md
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1## How to update [`nix-tools`](https://github.com/input-output-hk/nix-tools)
31. Use niv to update the sources.json:
5 ```
6 niv update nix-tools
7 ```
102. If `nix-tools.cabal` or `plan-to-nix` have changed, check the
11 materialized files for each of the compiler nix name in
12 `ls -d materialized/ghc*/nix-tools` with:
14 ```
15 nix-build scripts/check-compiler-materialization --argstr compiler-nix-name ghc884
16 ```