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46 lines
1.6 KiB
Text
46 lines
1.6 KiB
Text
nix (functional package manager)
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Nix is a purely functional package manager. This means that it treats packages
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like values in purely functional programming languages such as Haskell -- they
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are built by functions that don't have side-effects, and they never change
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after they have been built. Nix stores packages in the Nix store, usually the
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directory /nix/store, where each package has its own unique subdirectory such
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as
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/nix/store/b6gvzjyb2pg0kjfwrjmg1vfhh54ad73z-firefox-33.1/
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where b6gvzjyb2pg0... is a unique identifier for the package that captures all
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its dependencies (it's a cryptographic hash of the package's build dependency
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graph).
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Nix may be run in single or multi-user mode (which requires the nix-daemon). To
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have the nix daemon start and stop with your host, add to /etc/rc.d/rc.local:
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if [ -x /etc/rc.d/rc.nix ]; then
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/etc/rc.d/rc.nix start
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fi
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and to /etc/rc.d/rc.local_shutdown (creating it if needed):
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if [ -x /etc/rc.d/rc.nix ]; then
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/etc/rc.d/rc.nix stop
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fi
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The daemon requires users for building the nix packages, which should be added
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under the 'nixbld' group.
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groupadd -g 314 nixbld
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for n in $(seq 1 10); do useradd -c "Nix build user $n" \
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-d /var/empty -g nixbld -G nixbld -M -N -r -s "$(which nologin)" \
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nixbld$n; done
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Restricting access to the daemon is acheived by setting file permissions for
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the daemon's socket's folder.
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chgrp nix-users /nix/var/nix/daemon-socket
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chmod ug=rwx,o= /nix/var/nix/daemon-socket
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Correct permissions must also be set for the following profile directories to give users access.
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/nix/var/nix/profiles
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/var/nix/profiles
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