nixpkgs/system/system-options.nix
Nicolas Pierron 86ad3e36d5 Move Nix setup from system/active-configuration.sh to system/system-options.nix.
svn path=/nixos/branches/fix-style/; revision=13679
2009-01-02 16:07:05 +00:00

219 lines
6.3 KiB
Nix

# this file contains all extendable options originally defined in system.nix
{pkgs, config, ...}:
###### interface
let
inherit (pkgs.lib) mkOption;
option = {
system = {
build = mkOption {
default = {};
description = ''
Attribute set of derivation used to setup the system. The system
is built by aggregating all derivations.
'';
apply = components: components // {
# all components have to build directories
result = pkgs.buildEnv {
name = "system";
paths = pkgs.lib.mapRecordFlatten (n: v: v) components;
};
};
};
shell = mkOption {
default = "/var/run/current-system/sw/bin/bash";
description = ''
You should not redefine this option unless you want to change the
bash version for security issues.
'';
merge = list:
assert list != [] && builtins.tail list == [];
builtins.head list;
};
wrapperDir = mkOption {
default = "/var/setuid-wrappers";
description = ''
You should not redefine this option unless you want to change the
path for security issues.
'';
};
overridePath = mkOption {
default = [];
description = ''
You should not redefine this option unless you have trouble with a
package define in <varname>path</varname>.
'';
};
path = mkOption {
default = [];
description = ''
The packages you want in the boot environment.
'';
apply = list: pkgs.buildEnv {
name = "system-path";
paths = config.system.overridePath ++ list;
# Note: We need `/lib' to be among `pathsToLink' for NSS modules
# to work.
inherit (config.environment) pathsToLink;
ignoreCollisions = true;
};
};
};
};
in
###### implementation
let
inherit (pkgs.stringsWithDeps) noDepEntry FullDepEntry PackEntry;
activateLib = config.system.activationScripts.lib;
in
{
require = [
option
# config.system.activationScripts
(import ../system/activate-configuration.nix)
];
system = {
activationScripts = {
systemConfig = noDepEntry ''
systemConfig="$1"
if test -z "$systemConfig"; then
systemConfig="/system" # for the installation CD
fi
'';
defaultPath =
let path = [
pkgs.coreutils pkgs.gnugrep pkgs.findutils
pkgs.glibc # needed for getent
pkgs.pwdutils
]; in noDepEntry ''
export PATH=/empty
for i in ${toString path}; do
PATH=$PATH:$i/bin:$i/sbin;
done
'';
stdio = FullDepEntry ''
# Needed by some programs.
ln -sfn /proc/self/fd /dev/fd
ln -sfn /proc/self/fd/0 /dev/stdin
ln -sfn /proc/self/fd/1 /dev/stdout
ln -sfn /proc/self/fd/2 /dev/stderr
'' [
activateLib.defaultPath # path to ln
];
binsh = FullDepEntry ''
# Create the required /bin/sh symlink; otherwise lots of things
# (notably the system() function) won't work.
mkdir -m 0755 -p $mountPoint/bin
ln -sfn @bash@/bin/sh $mountPoint/bin/sh
'' [
activateLib.defaultPath # path to ln & mkdir
activateLib.stdio # ?
];
modprobe = FullDepEntry ''
# Allow the kernel to find our wrapped modprobe (which searches in the
# right location in the Nix store for kernel modules). We need this
# when the kernel (or some module) auto-loads a module.
# !!! maybe this should only happen at boot time, since we shouldn't
# use modules that don't match the running kernel.
echo @modprobe@/sbin/modprobe > /proc/sys/kernel/modprobe
'' [
# ?
];
var = FullDepEntry ''
# Various log/runtime directories.
mkdir -m 0755 -p /var/run
mkdir -m 0755 -p /var/run/console # for pam_console
touch /var/run/utmp # must exist
chmod 644 /var/run/utmp
mkdir -m 0755 -p /var/run/nix/current-load # for distributed builds
mkdir -m 0700 -p /var/run/nix/remote-stores
mkdir -m 0755 -p /var/log
touch /var/log/wtmp # must exist
chmod 644 /var/log/wtmp
touch /var/log/lastlog
chmod 644 /var/log/lastlog
mkdir -m 1777 -p /var/tmp
# Empty, read-only home directory of many system accounts.
mkdir -m 0555 -p /var/empty
'' [
activateLib.defaultPath # path to mkdir & touch & chmod
];
rootPasswd = FullDepEntry ''
# If there is no password file yet, create a root account with an
# empty password.
if ! test -e /etc/passwd; then
rootHome=/root
touch /etc/passwd; chmod 0644 /etc/passwd
touch /etc/group; chmod 0644 /etc/group
touch /etc/shadow; chmod 0600 /etc/shadow
# Can't use useradd, since it complains that it doesn't know us
# (bootstrap problem!).
echo "root:x:0:0:System administrator:$rootHome:@defaultShell@" >> /etc/passwd
echo "root::::::::" >> /etc/shadow
echo | passwd --stdin root
fi
'' [
activateLib.defaultPath # path to touch & passwd
activateLib.etc # for /etc
# ?
];
nix = FullDepEntry ''
# Set up Nix.
mkdir -p /nix/etc/nix
ln -sfn /etc/nix.conf /nix/etc/nix/nix.conf
chown root.nixbld /nix/store
chmod 1775 /nix/store
# Nix initialisation.
mkdir -m 0755 -p \
/nix/var/nix/gcroots \
/nix/var/nix/temproots \
/nix/var/nix/manifests \
/nix/var/nix/userpool \
/nix/var/nix/profiles \
/nix/var/nix/db \
/nix/var/log/nix/drvs \
/nix/var/nix/channel-cache \
/nix/var/nix/chroots
mkdir -m 1777 -p /nix/var/nix/gcroots/per-user
mkdir -m 1777 -p /nix/var/nix/profiles/per-user
ln -sf /nix/var/nix/profiles /nix/var/nix/gcroots/
ln -sf /nix/var/nix/manifests /nix/var/nix/gcroots/
'' [
activateLib.defaultPath
activateLib.etc # /etc/nix.conf
activateLib.users # nixbld group
];
};
};
}