system/nix: Wrap README at 72 columns.

Signed-off-by: B. Watson <yalhcru@gmail.com>

1 files changed, 22 insertions, 21 deletions

diff --git a/system/nix/README b/system/nix/README
index dcfdc6383e72..8e3152761d66 100644
--- a/system/nix/README
+++ b/system/nix/README
@@ -1,22 +1,23 @@
 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
-as
+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 as
 
     /nix/store/b6gvzjyb2pg0kjfwrjmg1vfhh54ad73z-firefox-33.1/
 
-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
-graph).
+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 graph).
 
-Nix may be run in single or multi-user mode (which requires the nix-daemon).
-The following sets up multi-user mode.
+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:
+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
@@ -28,23 +29,23 @@ and to /etc/rc.d/rc.local_shutdown (creating it if needed):
       /etc/rc.d/rc.nix stop
     fi
 
-The daemon requires users for building the nix packages, which should be added
-under the 'nixbld' group.
+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)" \
+    #     -d /var/empty -g nixbld -G nixbld -M -N -r -s /sbin/nologin \
     #     nixbld$n; done
 
-Restricting access to the daemon is acheived by setting file permissions for
-the daemon's socket's folder.
+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.
+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
@@ -54,8 +55,8 @@ give users access.
     # 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):
+To 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/nix.sh