mirror of
https://github.com/astro/deadnix.git
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Scan Nix files for dead code
.github/workflows | ||
src | ||
.gitignore | ||
Cargo.lock | ||
Cargo.toml | ||
flake.lock | ||
flake.nix | ||
LICENSE | ||
README.md | ||
test.nix |
deadnix
Scan .nix
files for dead code (unused variable bindings).
Usage with Nix Flakes
Help
$ nix run github:astro/deadnix -- --help
USAGE:
deadnix [FLAGS] [FILE_PATHS]...
FLAGS:
-e, --edit Remove unused code and write to source file
-l, --no-lambda-arg Don't check lambda parameter arguments
-_, --no-underscore Don't check any bindings that start with a _
-q, --quiet Don't print dead code report
-h, --help Prints help information
-V, --version Prints version information
ARGS:
<FILE_PATHS>... .nix files
Scan for unused code
$ nix run github:astro/deadnix test.nix
test.nix:1:
> unusedArgs@{ unusedArg, usedArg, ... }:
> ^^^^^^^^^^ ^^^^^^^^^
> | |
> | Unused lambda pattern: unusedArg
> Unused lambda pattern: unusedArgs
test.nix:3:
> inherit (builtins) unused_inherit;
> ^^^^^^^^^^^^^^
> |
> Unused let binding: unused_inherit
test.nix:5:
> unused = "fnord";
> ^^^^^^
> |
> Unused let binding: unused
test.nix:10:
> shadowed = 42;
> ^^^^^^^^
> |
> Unused let binding: shadowed
test.nix:11:
> _unused = unused: false;
> ^^^^^^^ ^^^^^^
> | |
> | Unused lambda argument: unused
> Unused let binding: _unused
test.nix:13:
> x = { unusedArg2, x ? args.y, ... }@args: used1 + x;
> ^^^^^^^^^^
> |
> Unused lambda pattern: unusedArg2
Remove unused code automatically
Do commit your changes into version control before!
$ nix run github:astro/deadnix -- -eq test.nix
What if the produced reports are wrong?
Please open an issue. Do not forget to include the .nix
code that
produces incorrect results.
Commercial Support
The author can be hired to implement the features that you wish, or to integrate this tool into your toolchain.