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pennae 09b245690a bulk-allocate Value instances in the evaluator calling GC_malloc for each value is significantly more expensive than allocating a bunch of values at once with GC_malloc_many. "a bunch" here is a GC block size, ie 16KiB or less. this gives a 1.5% performance boost when evaluating our nixos system. tested with nix eval --raw --impure --expr 'with import <nixpkgs/nixos> {}; system' # on master Time (mean ± σ): 3.335 s ± 0.007 s [User: 2.774 s, System: 0.293 s] Range (min … max): 3.315 s … 3.347 s 50 runs # with this change Time (mean ± σ): 3.288 s ± 0.006 s [User: 2.728 s, System: 0.292 s] Range (min … max): 3.274 s … 3.307 s 50 runs		2021-12-20 23:01:28 +01:00
.github	add pull_request_template.md	2021-12-09 14:31:34 -05:00
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	Fix docker instructions	2021-12-16 21:48:38 +01:00
m4	autoconf: Fix C++17 detection not working on Ubuntu 16.04.	2019-07-03 04:32:25 +02:00
maintainers	Update release script	2021-11-02 11:53:25 +01:00
misc	launchd: Set NumberOfFiles to 4096	2021-12-04 20:46:29 +08:00
mk	mk/libraries.mk: fix trace-ld and trace-ar expansions	2021-10-08 22:59:42 +01:00
nix-rust	Apply OS checks to host platform, not build	2021-06-23 15:00:36 +00:00
perl	Document libsodium, which is now mandatory, as a dependency	2021-11-27 23:11:11 +01:00
scripts	Merge pull request #5521 from abathur/clearly_mark_validation_step	2021-12-08 20:04:03 +00:00
src	bulk-allocate Value instances in the evaluator	2021-12-20 23:01:28 +01:00
tests	Merge pull request #5047 from symphorien/fix-nix-channel	2021-12-17 10:05:48 +01:00
.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	Remove nix-reduce-build and nix-http-export	2021-11-18 21:17:57 +01:00
.version	Bump version	2021-12-14 00:01:42 +01:00
boehmgc-coroutine-sp-fallback.diff	Fix leaking pthread_attr_t	2021-11-03 22:54:16 +01:00
bootstrap.sh	bootstrap: Simplify & make more robust.	2011-09-06 12:11:05 +00:00
configure.ac	Merge pull request #5678 from t184256/document-libsodium	2021-11-29 11:11:10 +01:00
COPYING	* Change this to LGPL to keep the government happy.	2006-04-25 16:41:06 +00:00
default.nix	Simplify shell.nix and default.nix	2020-06-17 19:21:46 +02:00
docker.nix	docker: fix image so that nix profile works	2021-12-16 11:29:05 +01:00
flake.lock	Revert "update flake.nix to 21.11"	2021-12-15 13:49:05 +01:00
flake.nix	pkgconfig -> pkg-config	2021-12-15 19:13:06 +01:00
local.mk	Remove 'dist' target	2020-12-03 16:17:58 +01:00
Makefile	Add a test for RefScanSink and clean up the code	2021-10-04 14:29:42 +02:00
Makefile.config.in	Apply OS checks to host platform, not build	2021-06-23 15:00:36 +00:00
precompiled-headers.h	Config: Use nlohmann/json	2020-08-20 11:02:16 +02:00
README.md	throw freenode down the memory hole	2021-05-27 21:48:39 +02:00
shell.nix	Add back flake-compat shell.nix	2020-07-17 14:58:59 +00:00

README.md

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.