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Eelco Dolstra 2c1ecf8e81 nix-env -i: Add a flag ‘--remove-all’ / ‘-r’ 
This is equivalent to running ‘nix-env -e '*'’ first, except that it
happens in a single transaction.  Thus, ‘nix-env -i pkgs...’ replaces
the profile with the specified set of packages.

The main motivation is to support declarative package management
(similar to environment.systemPackages in NixOS).  That is, if you
have a specification ‘profile.nix’ like this:

  with import <nixpkgs> {};
  [ thunderbird
    geeqie
    ...
  ]

then after any change to ‘profile.nix’, you can run:

  $ nix-env -f profile.nix -ir

to update the profile to match the specification.  (Without the ‘-r’
flag, if you remove a package from ‘profile.nix’, it won't be removed
from the actual profile.)

Suggested by @zefhemel.
2013-09-03 21:21:14 +02:00
corepkgs Lower xz compression level 2013-09-02 13:32:51 +02:00
doc nix-env -i: Add a flag ‘--remove-all’ / ‘-r’ 2013-09-03 21:21:14 +02:00
misc Rename nix-worker to nix-daemon 2012-10-03 17:59:23 -04:00
perl Don't keep "disabled" substituters running 2013-06-20 11:55:15 +02:00
scripts nix-shell: Don't disable Automake dependency tracking 2013-07-31 13:17:50 +02:00
src nix-env -i: Add a flag ‘--remove-all’ / ‘-r’ 2013-09-03 21:21:14 +02:00
tests Adda test for build-max-log-size 2013-09-02 12:44:30 +02:00
.gitignore Rename nix-worker to nix-daemon 2012-10-03 17:59:23 -04:00
AUTHORS * Put something in here. 2004-11-07 20:30:02 +00:00
bootstrap.sh bootstrap: Simplify & make more robust. 2011-09-06 12:11:05 +00:00
build.nix Add an experimental nix-make file 2012-05-21 09:43:01 -04:00
configure.ac Turn on -Wall 2013-08-19 11:41:15 +02:00
COPYING * Change this to LGPL to keep the government happy. 2006-04-25 16:41:06 +00:00
dev-shell Hack to clean up tests/test-tmp 2013-08-21 12:53:46 +02:00
INSTALL * Autoconf / Automake configuration and building. 2003-04-04 16:14:56 +00:00
Makefile.am Garbage collector: Don't follow symlinks arbitrarily 2013-07-12 14:03:36 +02:00
nix.spec.in Add gzip support for channel unpacking 2013-07-12 11:29:37 +02:00
README * Install documentation in $(docdir) (i.e. share/doc/nix). 2008-11-19 13:19:09 +00:00
release.nix Build Fedora 18 RPMs 2013-05-08 14:41:35 +02:00
substitute.mk Prevent config.h from being clobbered 2013-03-08 01:27:04 +01:00
version Bump version 2013-06-17 15:39:45 +02:00

README 

Nix is a purely functional package manager.  For installation and
usage instructions, please read the manual, which can be found in
`docs/manual/manual.html', and additionally at the Nix website at
<http://nixos.org/>.


Acknowledgments

This product includes software developed by the OpenSSL Project for
use in the OpenSSL Toolkit (http://www.OpenSSL.org/).