system/nix: Added (package manager).

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

system/nix/README

@@ -0,0 +1,46 @@
+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/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).
+
+Nix may be run in single or multi-user mode (which requires the nix-daemon). 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
+	fi
+
+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
+	fi
+
+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.
+
+	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.
+
+	/nix/var/nix/profiles
+	/var/nix/profiles

system/nix/config/rc.nix

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+#!/bin/sh
+
+# Short-Description:  Create lightweight, portable, self-sufficient containers.
+# Description:
+#  Docker is an open-source project to easily create lightweight, portable,
+#  self-sufficient containers from any application. The same container that a
+#  developer builds and tests on a laptop can run at scale, in production, on
+#  VMs, bare metal, OpenStack clusters, public clouds and more.
+
+
+PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
+
+BASE=nix-daemon
+
+UNSHARE=/usr/bin/unshare
+NIX=/usr/bin/$BASE
+NIX_PIDFILE=/var/run/$BASE.pid
+NIX_LOG=/var/log/nix.log
+NIX_OPTS=
+
+if [ -f /etc/default/$BASE ]; then
+	. /etc/default/$BASE
+fi
+
+# Check nix is present
+if [ ! -x $NIX ]; then
+	echo "$NIX not present or not executable"
+	exit 1
+fi
+
+nix_start() {
+  echo "starting $BASE ..."
+  if [ -x ${NIX} ]; then
+    # If there is an old PID file (no nix-daemon running), clean it up:
+    if [ -r ${NIX_PIDFILE} ]; then
+      if ! ps axc | grep nix-daemon 1> /dev/null 2> /dev/null ; then
+        echo "Cleaning up old ${NIX_PIDFILE}."
+        rm -f ${NIX_PIDFILE}
+      fi
+    fi
+    nohup "${UNSHARE}" -m -- ${NIX} >> ${NIX_LOG} 2>&1 &
+    echo $! > ${NIX_PIDFILE}
+  fi
+}
+
+# Stop nix:
+nix_stop() {
+  echo "stopping $BASE ..."
+  # If there is no PID file, ignore this request...
+  if [ -r ${NIX_PIDFILE} ]; then
+    kill $(cat ${NIX_PIDFILE})
+  fi
+  rm -f ${NIX_PIDFILE}
+}
+
+# Restart docker:
+nix_restart() {
+	nix_stop
+	nix_start
+}
+
+case "$1" in
+'start')
+  nix_start
+  ;;
+'stop')
+  nix_stop
+  ;;
+'restart')
+  nix_restart
+  ;;
+'status')
+  if [ -f ${NIX_PIDFILE} ] && ps -o cmd $(cat ${NIX_PIDFILE}) | grep -q $BASE ; then
+	  echo "status of $BASE: running"
+  else
+	  echo "status of $BASE: stopped"
+  fi
+  ;;
+*)
+  echo "usage $0 start|stop|restart|status"
+esac
+
+exit 0

system/nix/doinst.sh

@@ -0,0 +1,25 @@
+config() {
+  NEW="$1"
+  OLD="$(dirname $NEW)/$(basename $NEW .new)"
+  # If there's no config file by that name, mv it over:
+  if [ ! -r $OLD ]; then
+    mv $NEW $OLD
+  elif [ "$(cat $OLD | md5sum)" = "$(cat $NEW | md5sum)" ]; then
+    # toss the redundant copy
+    rm $NEW
+  fi
+  # Otherwise, we leave the .new copy for the admin to consider...
+}
+
+preserve_perms() {
+  NEW="$1"
+  OLD="$(dirname $NEW)/$(basename $NEW .new)"
+  if [ -e $OLD ]; then
+    cp -a $OLD ${NEW}.incoming
+    cat $NEW > ${NEW}.incoming
+    mv ${NEW}.incoming $NEW
+  fi
+  config $NEW
+}
+
+preserve_perms etc/rc.d/rc.nix.new

system/nix/nix.SlackBuild

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+#!/bin/sh
+
+# Slackware build script for nix
+
+# Copyright 2015 Pragmatic Cypher <slackbuilds@server.ky>
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+PRGNAM=nix
+VERSION=${VERSION:-1.10}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i486 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+CWD=$(pwd)
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i486" ]; then
+  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+tar xvf $CWD/$PRGNAM-${VERSION}.tar.xz
+cd $PRGNAM-$VERSION
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+CFLAGS="$SLKCFLAGS" \
+CXXFLAGS="$SLKCFLAGS" \
+./configure \
+  --mandir=/usr/man \
+  --prefix=/usr \
+  --libdir=/usr/lib${LIBDIRSUFFIX} \
+  --sysconfdir=/etc \
+  --build=$ARCH-slackware-linux \
+  --host=$ARCH-slackware-linux
+
+make
+make install DESTDIR=$PKG
+
+install -D --mode 0755 $CWD/config/rc.nix $PKG/etc/rc.d/rc.nix.new
+mkdir -p $PKG/nix
+mkdir -p $PKG/var/nix/profiles
+mkdir -p $PKG/nix/var/nix/profiles
+mkdir -p $PKG/nix/var/nix/daemon-socket
+
+rm -fr $PKG/etc/init.d
+rm -fr $PKG/usr/lib/systemd
+
+mkdir -p $PKG/usr/lib${LIBDIRSUFFIX}/perl5/vendor_perl
+mv $PKG/usr/lib${LIBDIRSUFFIX}/perl5/site_perl/**/**/* $PKG/usr/lib${LIBDIRSUFFIX}/perl5/vendor_perl
+rm -r $PKG/usr/lib${LIBDIRSUFFIX}/perl5/site_perl
+
+mv $PKG/usr/lib/pkgconfig/ $PKG/usr/lib${LIBDIRSUFFIX}/pkgconfig/
+
+find $PKG/usr/man -type f -exec gzip -9 {} \;
+for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
+
+if [ "$ARCH" = "x86_64" ]; then
+  rm -rf $PKG/usr/lib
+fi
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+cat $CWD/doinst.sh > $PKG/install/doinst.sh
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}

system/nix/nix.info

@@ -0,0 +1,10 @@
+PRGNAM="nix"
+VERSION="1.10"
+HOMEPAGE="http://nixos.org/nix"
+DOWNLOAD="https://hydra.nixos.org/build/25489769/download/4/nix-1.10.tar.xz"
+MD5SUM="f34dcbdb2d3b9d1e111eaa4b7e52bf5d"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES="perl-DBD-SQLite perl-WWW-Curl"
+MAINTAINER="Pragmatic Cypher"
+EMAIL="slackbuilds@server.ky"

system/nix/slack-desc

@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+   |-----handy-ruler------------------------------------------------------|
+nix: nix (package manager)
+nix:
+nix: The purely functional package manager.
+nix:
+nix:
+nix:
+nix:
+nix:
+nix:
+nix:
+nix: