nixpkgs/nixos/modules/rename.nix

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{ config, pkgs, options, ... }:
with pkgs.lib;
let
alias = from: to: rename {
inherit from to;
name = "Alias";
use = id;
define = id;
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visible = true;
};
obsolete = from: to: rename {
inherit from to;
name = "Obsolete name";
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use = x: builtins.trace "Obsolete option `${showOption from}' is used instead of `${showOption to}'." x;
define = x: builtins.trace "Obsolete option `${showOption from}' is defined instead of `${showOption to}'." x;
};
deprecated = from: to: rename {
inherit from to;
name = "Deprecated name";
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use = x: abort "Deprecated option `${showOption from}' is used instead of `${showOption to}'.";
define = x: abort "Deprecated option `${showOption from}' is defined instead of `${showOption to}'.";
};
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showOption = concatStringsSep ".";
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zipModules = list:
zipAttrsWith (n: v:
if tail v != [] then
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if n == "_type" then (head v)
else if n == "extraConfigs" then concatLists v
else if n == "warnings" then concatLists v
else if n == "description" || n == "apply" then
abort "Cannot rename an option to multiple options."
else zipModules v
else head v
) list;
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rename = { from, to, name, use, define, visible ? false }:
let
setTo = setAttrByPath to;
setFrom = setAttrByPath from;
toOf = attrByPath to
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(abort "Renaming error: option `${showOption to}' does not exists.");
fromOf = attrByPath from
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(abort "Internal error: option `${showOption from}' should be declared.");
in
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[ { options = setFrom (mkOption {
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description = "${name} of <option>${showOption to}</option>.";
apply = x: use (toOf config);
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inherit visible;
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});
}
{ options = setTo (mkOption {
extraConfigs =
let externalDefs = (fromOf options).definitions; in
if externalDefs == [] then []
else map (def: def.value) (define externalDefs);
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});
}
];
obsolete' = option: singleton
{ options = setAttrByPath option (mkOption {
default = null;
visible = false;
});
config.warnings = optional (getAttrFromPath option config != null)
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"The option `${showOption option}' defined in your configuration no longer has any effect; please remove it.";
};
in zipModules ([]
# usage example:
# ++ alias [ "services" "xserver" "slim" "theme" ] [ "services" "xserver" "displayManager" "slim" "theme" ]
++ obsolete [ "environment" "extraPackages" ] [ "environment" "systemPackages" ]
++ obsolete [ "environment" "enableBashCompletion" ] [ "programs" "bash" "enableCompletion" ]
++ obsolete [ "security" "extraSetuidPrograms" ] [ "security" "setuidPrograms" ]
++ obsolete [ "networking" "enableWLAN" ] [ "networking" "wireless" "enable" ]
++ obsolete [ "networking" "enableRT73Firmware" ] [ "networking" "enableRalinkFirmware" ]
# FIXME: Remove these eventually.
++ obsolete [ "boot" "systemd" "sockets" ] [ "systemd" "sockets" ]
++ obsolete [ "boot" "systemd" "targets" ] [ "systemd" "targets" ]
++ obsolete [ "boot" "systemd" "services" ] [ "systemd" "services" ]
# Old Grub-related options.
++ obsolete [ "boot" "copyKernels" ] [ "boot" "loader" "grub" "copyKernels" ]
++ obsolete [ "boot" "extraGrubEntries" ] [ "boot" "loader" "grub" "extraEntries" ]
++ obsolete [ "boot" "extraGrubEntriesBeforeNixos" ] [ "boot" "loader" "grub" "extraEntriesBeforeNixOS" ]
++ obsolete [ "boot" "grubDevice" ] [ "boot" "loader" "grub" "device" ]
++ obsolete [ "boot" "bootMount" ] [ "boot" "loader" "grub" "bootDevice" ]
++ obsolete [ "boot" "grubSplashImage" ] [ "boot" "loader" "grub" "splashImage" ]
++ obsolete [ "boot" "initrd" "extraKernelModules" ] [ "boot" "initrd" "kernelModules" ]
# OpenSSH
++ obsolete [ "services" "sshd" "ports" ] [ "services" "openssh" "ports" ]
++ alias [ "services" "sshd" "enable" ] [ "services" "openssh" "enable" ]
++ obsolete [ "services" "sshd" "allowSFTP" ] [ "services" "openssh" "allowSFTP" ]
++ obsolete [ "services" "sshd" "forwardX11" ] [ "services" "openssh" "forwardX11" ]
++ obsolete [ "services" "sshd" "gatewayPorts" ] [ "services" "openssh" "gatewayPorts" ]
++ obsolete [ "services" "sshd" "permitRootLogin" ] [ "services" "openssh" "permitRootLogin" ]
++ obsolete [ "services" "xserver" "startSSHAgent" ] [ "services" "xserver" "startOpenSSHAgent" ]
# KDE
++ deprecated [ "kde" "extraPackages" ] [ "environment" "kdePackages" ]
# ++ obsolete [ "environment" "kdePackages" ] [ "environment" "systemPackages" ] # !!! doesn't work!
# Multiple efi bootloaders now
++ obsolete [ "boot" "loader" "efi" "efibootmgr" "enable" ] [ "boot" "loader" "efi" "canTouchEfiVariables" ]
# NixOS environment changes
# !!! this hardcodes bash, could we detect from config which shell is actually used?
++ obsolete [ "environment" "promptInit" ] [ "programs" "bash" "promptInit" ]
# Options that are obsolete and have no replacement.
++ obsolete' [ "boot" "loader" "grub" "bootDevice" ]
++ obsolete' [ "boot" "initrd" "luks" "enable" ]
)