A modern, delicious implementation of the Nix package manager, focused on correctness, usability, and growth — and committed to doing right by its community https://lix.systems
Find a file
Adam Joseph dc205c75a2 src/libexpr/primops.cc: correct definition for intersectAttrs
The current definition of `intersectAttrs` is incorrect:

> Return a set consisting of the attributes in the set e2 that also exist in the
> set e1.

Recall that (Nix manual, section 5.1):

> An attribute set is a collection of name-value-pairs (called attributes)

According to the existing description of `intersectAttrs`, the following should
evaluate to the empty set, since no key-value *pair* (i.e. attribute) exists in
both sets:

```
builtins.intersectAttrs { x=3; } {x="foo";}
```

And yet:

```
nix-repl> builtins.intersectAttrs { x=3; } {x="foo";}
{ x = "foo"; }
```

Clearly the intent here was for the *names* of the resulting attribute set to be
the intersection of the *names* of the two arguments, and for the values of the
resulting attribute set to be the values from the second argument.

This commit corrects the definition, making it match the implementation and intent.
2022-09-24 23:51:09 -07:00
.github issue template: fill 'about' field 2022-09-19 10:05:29 +02:00
config Run autoupdate 2021-06-01 11:42:38 +02:00
contrib function-trace: always show the trace 2019-09-18 23:23:21 +02:00
doc/manual Merge pull request #7082 from rapenne-s/ccache 2022-09-24 12:45:27 +02:00
m4 autoconf: Fix C++17 detection not working on Ubuntu 16.04. 2019-07-03 04:32:25 +02:00
maintainers Integrate push-docker.sh into the release script 2022-02-18 13:58:01 +01:00
misc Apply suggestions from code review 2022-09-02 10:50:02 -05:00
mk Fix incremental static builds 2022-06-22 17:53:58 +02:00
perl Remove std::string alias (for real this time) 2022-02-25 16:13:02 +01:00
scripts fix uname -m return value for armv6l/armv7l 2022-09-20 15:36:36 +09:00
src src/libexpr/primops.cc: correct definition for intersectAttrs 2022-09-24 23:51:09 -07:00
tests Dodge "trusted" vs "trustworthy" by being explicit 2022-09-22 14:37:52 -04:00
.dir-locals.el .dir-locals.el: Set c-block-comment-prefix 2020-07-10 11:21:06 +02:00
.editorconfig Add .editorconfig 2017-06-05 22:57:28 +01:00
.gitignore Add fish suport to installer 2022-09-13 12:56:16 -04:00
.version Bump version 2022-08-25 11:50:14 +02:00
boehmgc-coroutine-sp-fallback.diff Update boehmgc-coroutine-sp-fallback.diff for darwin 2022-09-01 11:48:50 -05:00
bootstrap.sh bootstrap: Simplify & make more robust. 2011-09-06 12:11:05 +00:00
configure.ac Don't use -load_all on darwin 2022-08-03 10:27:25 +02:00
COPYING * Change this to LGPL to keep the government happy. 2006-04-25 16:41:06 +00:00
default.nix Remove url literals 2022-01-24 13:28:21 +01:00
docker.nix dockerImage: fix root shell 2022-09-14 16:20:58 -06:00
flake.lock curl: patch for netrc regression in Nix 2022-07-14 17:45:02 -05:00
flake.nix Merge pull request #7082 from rapenne-s/ccache 2022-09-24 12:45:27 +02:00
local.mk Remove 'dist' target 2020-12-03 16:17:58 +01:00
Makefile Merge branch 'master' into lto 2022-05-25 11:55:13 +00:00
Makefile.config.in Embed the sandbox shell into the statically linked 'nix' binary 2022-06-23 04:08:28 +02:00
precompiled-headers.h Config: Use nlohmann/json 2020-08-20 11:02:16 +02:00
README.md Fix link to hacking doc 2022-07-30 09:12:50 -07:00
shell.nix Remove url literals 2022-01-24 13:28:21 +01:00

Nix

Open Collective supporters Test

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.