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Merge "nixos-option --install" into nixos-generate-config

Having configuration.nix generation hidden underneath nixos-option
never made sense, also given that there was another command to
generate part of the configuration (nixos-hardware-scan).  Now
nixos-generate-config produces both configuration.nix and
hardware-configuration.nix.  The latter is overwritten while the
former is not.
This commit is contained in:
Eelco Dolstra 2013-10-11 15:35:41 +02:00
parent 0f550596c9
commit ac13bd2575
3 changed files with 102 additions and 174 deletions

View file

@ -18,17 +18,12 @@
<cmdsynopsis>
<command>nixos-option</command>
<group choice="opt">
<option>-i</option>
<option>v</option>
<option>d</option>
<option>l</option>
<option>-v</option>
<option>-d</option>
<option>-l</option>
</group>
<arg choice='plain'><replaceable>option.name</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>nixos-option</command>
<arg choice='plain'><option>--install</option></arg>
</cmdsynopsis>
</refsynopsisdiv>
@ -40,16 +35,7 @@ of the option name given as argument. By default, it returns the value of
the option.</para>
<para>When the option name is not an option, the command prints the list of
attributes in contained in the attribute set. This could used to provide
completion in some editors.</para>
<para>When the option <option>--install</option> (or <option>-i</option>) is
used with no option name, this command generates a template configuration
with a scan of the target system. It produces a template configuration
in <filename>/etc/nixos/configuration.nix</filename>, and a scan of the
machine in <filename>/etc/nixos/hardware-configuration.nix</filename>. The
scan of the machine is produced
by <command>nixos-hardware-scan</command>.</para>
attributes contained in the attribute set.</para>
</refsection>
@ -59,15 +45,6 @@ by <command>nixos-hardware-scan</command>.</para>
<variablelist>
<varlistentry>
<term><option>--install</option>, <option>-i</option></term>
<listitem>
<para>Use the installation configuration instead of current system
configuration. Generate a template configuration if no option name is
specified.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--value</option>, <option>-v</option></term>
<listitem>
@ -102,15 +79,6 @@ by <command>nixos-hardware-scan</command>.</para>
<variablelist>
<varlistentry>
<term><envar>mountPoint</envar></term>
<listitem>
<para>Location of the target file system. Defaults to
<filename>/mnt</filename>. This environment variable is only used in
combinaison with <option>--install</option> option.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><envar>NIXOS_CONFIG</envar></term>
<listitem>

View file

@ -250,7 +250,7 @@ my $modulePackages = toNixExpr(removeDups @modulePackages);
my $attrs = multiLineList(" ", removeDups @attrs);
my $imports = multiLineList(" ", removeDups @imports);
my $fn = "$outDir/hardware.nix";
my $fn = "$outDir/hardware-configuration.nix";
print STDERR "writing $fn...\n";
mkpath($outDir, 0, 0755);
@ -271,4 +271,100 @@ write_file($fn, <<EOF);
$attrs}
EOF
# Generate a basic configuration.nix, unless one already exists.
$fn = "$outDir/configuration.nix";
if (! -e $fn) {
print STDERR "writing $fn...\n";
my $bootloaderConfig;
if (-e "/sys/firmware/efi/efivars") {
$bootLoaderConfig = <<EOF;
# Use the gummiboot efi boot loader.
boot.loader.grub.enable = false;
boot.loader.gummiboot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
# !!! Remove me when nixos is on 3.10 or greater by default
# EFI booting requires kernel >= 3.10
boot.kernelPackages = pkgs.linuxPackages_3_10;
EOF
} else {
$bootLoaderConfig = <<EOF;
# Use the GRUB 2 boot loader.
boot.loader.grub.enable = true;
boot.loader.grub.version = 2;
# Define on which hard drive you want to install Grub.
# boot.loader.grub.device = "/dev/sda";
EOF
}
write_file($fn, <<EOF);
# Edit this configuration file to define what should be installed on
# your system. Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running nixos-help).
{ config, pkgs, ... }:
{
imports =
[ # Include the results of the hardware scan.
./hardware-configuration.nix
];
boot.initrd.kernelModules =
[ # Specify all kernel modules that are necessary for mounting the root
# filesystem.
# "xfs" "ata_piix"
# fbcon # Uncomment this when EFI booting to see the console before the root partition is mounted
];
$bootLoaderConfig
# networking.hostName = "nixos"; # Define your hostname.
# networking.wireless.enable = true; # Enables wireless.
# Add filesystem entries for each partition that you want to see
# mounted at boot time. This should include at least the root
# filesystem.
# fileSystems."/".device = "/dev/disk/by-label/nixos";
# fileSystems."/data" = # where you want to mount the device
# { device = "/dev/sdb"; # the device
# fsType = "ext3"; # the type of the partition
# options = "data=journal";
# };
# List swap partitions activated at boot time.
swapDevices =
[ # { device = "/dev/disk/by-label/swap"; }
];
# Select internationalisation properties.
# i18n = {
# consoleFont = "lat9w-16";
# consoleKeyMap = "us";
# defaultLocale = "en_US.UTF-8";
# };
# List services that you want to enable:
# Enable the OpenSSH daemon.
# services.openssh.enable = true;
# Enable CUPS to print documents.
# services.printing.enable = true;
# Enable the X11 windowing system.
# services.xserver.enable = true;
# services.xserver.layout = "us";
# services.xserver.xkbOptions = "eurosign:e";
# Enable the KDE Desktop Environment.
# services.xserver.displayManager.kdm.enable = true;
# services.xserver.desktopManager.kde4.enable = true;
}
EOF
} else {
print STDERR "warning: not overwriting existing $fn\n";
}
# workaround for a bug in substituteAll

View file

@ -1,14 +1,7 @@
#! @shell@ -e
# Allow the location of NixOS sources and the system configuration
# file to be overridden.
: ${mountPoint=/mnt}
: ${NIXOS_CONFIG=/etc/nixos/configuration.nix}
export NIXOS_CONFIG
usage () {
exec man nixos-rebuild
exec man nixos-option
exit 1
}
@ -20,7 +13,6 @@ desc=false
defs=false
value=false
xml=false
install=false
verbose=false
option=""
@ -38,7 +30,6 @@ for arg; do
-d*) longarg="$longarg --description";;
-v*) longarg="$longarg --value";;
-l*) longarg="$longarg --lookup";;
-i*) longarg="$longarg --install";;
-*) usage;;
esac
# remove the first letter option
@ -53,7 +44,6 @@ for arg; do
--value) value=true;;
--lookup) defs=true;;
--xml) xml=true;;
--install) install=true;;
--verbose) verbose=true;;
--help) usage;;
-*) usage;;
@ -81,16 +71,6 @@ if $xml; then
defs=true
fi
# --install cannot be used with -d -v -l without option name.
if $value || $desc || $defs && $install && test -z "$option"; then
usage
fi
generate=false
if ! $defs && ! $desc && ! $value && $install && test -z "$option"; then
generate=true
fi
if ! $defs && ! $desc; then
value=true
fi
@ -154,122 +134,6 @@ nixMap() {
done
}
if $install; then
NIXOS_CONFIG="$mountPoint$NIXOS_CONFIG"
fi
if $generate; then
mkdir -p $(dirname "$NIXOS_CONFIG")
# Scan the hardware and add the result to /etc/nixos/hardware-scan.nix.
hardware_config="${NIXOS_CONFIG%/configuration.nix}/hardware-configuration.nix"
if test -e "$hardware_config"; then
echo "A hardware configuration file exists, generation skipped."
else
echo "Generating a hardware configuration file in $hardware_config..."
nixos-hardware-scan > "$hardware_config"
fi
if test -e "$NIXOS_CONFIG"; then
echo 1>&2 "error: Cannot generate a template configuration because a configuration file exists."
exit 1
fi
nl="
"
if test -e /sys/firmware/efi/efivars; then
l1=" # Use the gummiboot efi boot loader."
l2=" boot.loader.grub.enable = false;"
l3=" boot.loader.gummiboot.enable = true;"
l4=" boot.loader.efi.canTouchEfiVariables = true;"
# !!! Remove me when nixos is on 3.10 or greater by default
l5=" # EFI booting requires kernel >= 3.10"
l6=" boot.kernelPackages = pkgs.linuxPackages_3_10;"
bootloader_config="$l1$nl$l2$nl$l3$nl$l4$nl$nl$l5$nl$l6"
else
l1=" # Use the Grub2 boot loader."
l2=" boot.loader.grub.enable = true;"
l3=" boot.loader.grub.version = 2;"
l4=" # Define on which hard drive you want to install Grub."
l5=' # boot.loader.grub.device = "/dev/sda";'
bootloader_config="$l1$nl$l2$nl$l3$nl$nl$l4$nl$l5"
fi
echo "Generating a basic configuration file in $NIXOS_CONFIG..."
# Generate a template configuration file where the user has to
# fill the gaps.
cat <<EOF > "$NIXOS_CONFIG"
# Edit this configuration file to define what should be installed on
# the system. Help is available in the configuration.nix(5) man page
# or the NixOS manual available on virtual console 8 (Alt+F8).
{ config, pkgs, ... }:
{
imports =
[ # Include the results of the hardware scan.
./hardware-configuration.nix
];
boot.initrd.kernelModules =
[ # Specify all kernel modules that are necessary for mounting the root
# filesystem.
# "xfs" "ata_piix"
# fbcon # Uncomment this when EFI booting to see the console before the root partition is mounted
];
$bootloader_config
# networking.hostName = "nixos"; # Define your hostname.
# networking.wireless.enable = true; # Enables Wireless.
# Add filesystem entries for each partition that you want to see
# mounted at boot time. This should include at least the root
# filesystem.
# fileSystems."/".device = "/dev/disk/by-label/nixos";
# fileSystems."/data" = # where you want to mount the device
# { device = "/dev/sdb"; # the device
# fsType = "ext3"; # the type of the partition
# options = "data=journal";
# };
# List swap partitions activated at boot time.
swapDevices =
[ # { device = "/dev/disk/by-label/swap"; }
];
# Select internationalisation properties.
# i18n = {
# consoleFont = "lat9w-16";
# consoleKeyMap = "us";
# defaultLocale = "en_US.UTF-8";
# };
# List services that you want to enable:
# Enable the OpenSSH daemon.
# services.openssh.enable = true;
# Enable CUPS to print documents.
# services.printing.enable = true;
# Enable the X11 windowing system.
# services.xserver.enable = true;
# services.xserver.layout = "us";
# services.xserver.xkbOptions = "eurosign:e";
# Enable the KDE Desktop Environment.
# services.xserver.displayManager.kdm.enable = true;
# services.xserver.desktopManager.kde4.enable = true;
}
EOF
exit 0
fi;
# This duplicates the work made below, but it is useful for processing
# the output of nixos-option with other tools such as nixos-gui.
if $xml; then