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README: mention lorri

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fixes #9
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Jörg Thalheim 2020-04-09 06:32:05 +01:00
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@ -35,3 +35,15 @@ keep-outputs = true
At the moment nix-direnv depends on gnugrep and a modern bash version. At the moment nix-direnv depends on gnugrep and a modern bash version.
This might lead to [problems](https://github.com/nix-community/nix-direnv/issues/3) on macOS. This might lead to [problems](https://github.com/nix-community/nix-direnv/issues/3) on macOS.
As a work-around we suggest to install direnv/grep via nix or homebrew. As a work-around we suggest to install direnv/grep via nix or homebrew.
## Why not using lorri instead.
Lorri causes large CPU load when `$NIXPKGS` is pointed to a directory, i.e. a
git checkout. This is because it tries to watch any referenced nix file and
re-evaluates if those changes. Nix-direnv comprises between performance and
correctness and only reevaluate direnv if either the project-specific
`default.nix` / `shell.nix` changes or if there is a new commit added to
`nixpkgs`. A re-evaluation can be also triggered by using `touch shell.nix` in
the same project. Also `nix-direnv` does not require additional software besides
`direnv` + `nix` i.e. a daemon and the function could be included into the
project itself.