forked from lix-project/lix
I think that it's not very helpful to get "cached failures" in a wrong `flake.nix`. This can be very confusing when debugging a Nix expression. See for instance NixOS/nixpkgs#118115. In fact, the eval cache allows a forced reevaluation which is used for e.g. `nix eval`. This change makes sure that this is the case for `nix build` as well. So rather than λ ma27 [~/Projects/exp] → ../nix/outputs/out/bin/nix build -L --rebuild --experimental-features 'nix-command flakes' error: cached failure of attribute 'defaultPackage.x86_64-linux' the evaluation of already-evaluated (and failed) attributes looks like this now: λ ma27 [~/Projects/exp] → ../nix/outputs/out/bin/nix build -L --rebuild --experimental-features 'nix-command flakes' error: attribute 'hell' missing at /nix/store/mrnvi9ss8zn5wj6gpn4bcd68vbh42mfh-source/flake.nix:6:35: 5| 6| packages.x86_64-linux.hello = nixpkgs.legacyPackages.x86_64-linux.hell; | ^ 7| (use '--show-trace' to show detailed location information) |
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.github | ||
config | ||
contrib | ||
doc/manual | ||
m4 | ||
maintainers | ||
misc | ||
mk | ||
nix-rust | ||
perl | ||
scripts | ||
src | ||
tests | ||
.dir-locals.el | ||
.editorconfig | ||
.gitignore | ||
.version | ||
bootstrap.sh | ||
configure.ac | ||
COPYING | ||
default.nix | ||
flake.lock | ||
flake.nix | ||
local.mk | ||
Makefile | ||
Makefile.config.in | ||
precompiled-headers.h | ||
README.md | ||
shell.nix |
Nix
Nix is a powerful package manager for Linux and other Unix systems that makes package management reliable and reproducible. Please refer to the Nix manual for more details.
Installation
On Linux and macOS the easiest way to install Nix is to run the following shell command (as a user other than root):
$ curl -L https://nixos.org/nix/install | sh
Information on additional installation methods is available on the Nix download page.
Building And Developing
See our Hacking guide in our manual for instruction on how to build nix from source with nix-build or how to get a development environment.
Additional Resources
License
Nix is released under the LGPL v2.1.