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14.2 > System > nix (2.0.2)

nix (functional package manager)

Nix is a purely functional package manager. This means that it treats packages
like values in purely functional programming languages such as Haskell -- they
are built by functions that don't have side-effects, and they never change
after they have been built. Nix stores packages in the Nix store, usually the
directory /nix/store, where each package has its own unique subdirectory such


where b6gvzjyb2pg0... is a unique identifier for the package that captures all
its dependencies (it's a cryptographic hash of the package's build dependency

Nix may be run in single or multi-user mode (which requires the nix-daemon).
The following sets up multi-user mode.

To have the nix daemon start and stop with your host, add to /etc/rc.d/rc.local:

if [ -x /etc/rc.d/rc.nix ]; then
/etc/rc.d/rc.nix start

and to /etc/rc.d/rc.local_shutdown (creating it if needed):

if [ -x /etc/rc.d/rc.nix ]; then
/etc/rc.d/rc.nix stop

The daemon requires users for building the nix packages, which should be added
under the 'nixbld' group.

# groupadd -g 314 nixbld
# for n in $(seq 1 10); do useradd -c "Nix build user $n" \
# -d /var/empty -g nixbld -G nixbld -M -N -r -s "$(which nologin)" \
# nixbld$n; done

Restricting access to the daemon is acheived by setting file permissions for
the daemon's socket's folder.

# groupadd nix-users
# chgrp nix-users /nix/var/nix/daemon-socket
# chmod ug=rwx,o= /nix/var/nix/daemon-socket

Correct permissions must also be set for the following profile directories to
give users access.

# mkdir -p /nix/var/nix/profiles/per-user
# chgrp nix-users /nix/var/nix/profiles/per-user
# chmod go+wt /nix/var/nix/profiles/per-user

# mkdir -p /nix/var/nix/gcroots/per-user
# chgrp nix-users /nix/var/nix/gcroots/per-user
# chmod go+wt /nix/var/nix/gcroots/per-user

For setup a user to use nix, add him to the nix-users group and load these
lines on login (via $HOME/.profile):

export NIX_REMOTE=daemon
source /etc/profile.d/

If you have patches email me, or send a pull request via github:

This requires: libseccomp, libsodium

Maintained by: Pragmatic Cypher
Keywords: package manager,nix
ChangeLog: nix


Source Downloads:
nix-2.0.2.tar.xz (1cd8ce214c1fd2792e445692c756f63e)

Download SlackBuild:
nix.tar.gz.asc (FAQ)

(the SlackBuild does not include the source)

Individual Files:

Validated for Slackware 14.2

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