I am using the default nixos 17.09 channel and want to install an unfree package from the unstable channel.
I am using (import <nixos-unstable> {}).vscode to install vscode in this case, but I am getting the error that I must set ...allowUnfree = true;
It seems that the setting only applies to the default channel.
How can I set allowFree = true; also on the unstable channel?
I found a solution (https://github.com/NixOS/nixpkgs/issues/25880#issuecomment-322855573).
It creates an alias for the unstable channel with the same config.
nixpkgs.config =
{
# Allow proprietary packages
allowUnfree = true;
# Create an alias for the unstable channel
packageOverrides = pkgs:
{
unstable = import <nixos-unstable>
{
# pass the nixpkgs config to the unstable alias
# to ensure `allowUnfree = true;` is propagated:
config = config.nixpkgs.config;
};
};
};
Then you can use it like unstable.vscode instead of (import <nixos-unstable> {}).vscode.
As an alternative example:
{ config, pkgs, ... }:
let
unstable = import <unstable> {
config = config.nixpkgs.config;
};
in
{
environment.systemPackages = with pkgs; [
# google-chrome
unstable.google-chrome
];
nixpkgs.config.allowUnfree = true;
}
Related
I am trying to make a Nix flake which will use poetry2nix for building a poetry project the code is
{
description = "searx : flake";
inputs.nixpkgs.url = github:NixOS/nixpkgs/nixos-20.03;
outputs = { self, nixpkgs }: {
defaultPackage.x86_64-linux =
with import nixpkgs { system = "x86_64-linux";
buildInputs = [
nixpkgs.python39
nixpkgs.git
nixpkgs.openssl
nixpkgs.python39Packages.pip
nixpkgs.uwsgi
nixpkgs.python39Packages.virtualenv
nixpkgs.poetry
];
};
pkgs.poetry2nix.mkPoetryApplication {
projectDir = ./.;
src = pkgs.fetchgit {
url = "https://github.com/searx/searx.git";
rev = "ae122ea943f77600fd97556503c483dcd92e1e63";
sha256 = "sIJ+QXwUdsRIpg6ffUS3ItQvrFy0kmtI8whaiR7qEz4=";
};
};
};
However the Nix flake starts pulling python3.7 and breaks with following error
ERROR: Could not find a version that satisfies the requirement importlib-metadata; python_version < "3.8" (from click==8.0.1) (from versions: none)
> ERROR: No matching distribution found for importlib-metadata; python_version < "3.8" (from click==8.0.1)
Equivalent default.nix pulls python 3.9 and builds successfully. I believe if flake could be pinned to python3.9 it will be able to build this. Is this possible?
You can pass another python to mkPoetryApplication.
pkgs.poetry2nix.mkPoetryApplication {
projectDir = ./.;
python = pkgs.python39;
# ... your code ...
}
So I want to replace pkgs.picom in my home-manager config with a newer fork. How can I do that?
I have a feeling it's something like:
let newPicom = pkgs.picom.override.src.url = "https://github.com/ibhagwan/picom";
in
services.picom.package = newPicom;
But knowing Nix is probably actually some really long incantation with self: super: and so on.
nixos.wiki has an example of overriding the source of a package.
You do need to provide a reproducible source. A github repo url is mutable, so you need to specify the revision.
{ pkgs, ... }:
let newPicom = pkgs.picom.overrideAttrs (old: {
version = "git"; # usually harmless to omit
src = /* put your source here; typically a local path or
a fixed-output derivation produced by
`fetchFromGitHub`.
builtins.fetchGit is also an option. Doesn't run
in parallel but does fetch private sources. */;
});
in {
services.picom.package = newPicom;
}
Overlays
let
picom_overlay = (self: super: {
picom = super.picom.overrideAttrs (prev: {
version = "git";
src = pkgs.fetchFromGitHub {
owner = "yshui";
repo = "picom";
rev = "31e58712ec11b198340ae217d33a73d8ac73b7fe";
sha256 = pkgs.lib.fakeSha256;
};
});
});
in
nixpkgs.overlays = [ picom_overlay ];
Of course, sha256 should be replaced with the relevant hash shown in the output error after building -- in this case:
sha256 = "sha256-VBnIzisg/7Xetd/AWVHlnaWXlxX+wqeYTpstO6+T5cE=";
picom-next
Note that there is also a picom-next package so one can alternatively do:
let
picom_overlay = (self: super: {
picom = super.picom.overrideAttrs (oldAttrs: rec {
inherit (super.picom-next) pname version src;
});
});
in
nixpkgs.overlays = [ picom_overlay ];
Or more simply with #RobertHensing's suggestion:
services.picom.package = pkgs.picom-next;
I've just started playing with NixOS, and have so far managed to edit /etc/nixos/configuration.nix in my NixOS 18.09 VM to have PHP-FPM and the Caddy webserver enabled.
{ config, pkgs, ... }:
{
imports = [ <nixpkgs/nixos/modules/installer/virtualbox-demo.nix> ];
users = {
mutableUsers = false;
groups = {
caddy = { };
php-project = { };
};
users = {
hello = {
group = "php-project";
};
};
};
environment.systemPackages = [
pkgs.htop
pkgs.httpie
pkgs.php # for PHP CLI
];
services.caddy = {
enable = true;
email = "david#example.com";
agree = true;
config = ''
(common) {
gzip
header / -Server
header / -X-Powered-By
}
:8080 {
root /var/www/hello
fastcgi / /run/phpfpm/hello.sock php
log syslog
import common
}
'';
};
services.phpfpm = {
phpOptions = ''
date.timezone = "Europe/Berlin"
'';
poolConfigs = {
hello = ''
user = hello
listen = /run/phpfpm/hello.sock
; ...
pm.max_requests = 500
'';
};
};
}
A PHP-processed response is available at at localhost:8080. (Yay!)
To enable Caddy plugins when compiling from source, Go imports are added to caddy's run.go, e.g.:
_ "github.com/mholt/caddy/caddyhttp" // plug in the HTTP server type
// This is where other plugins get plugged in (imported)
_ "github.com/nicolasazrak/caddy-cache" // added to use another plugin
)
How can I set such line insertion to be performed after the source is downloaded and before the build takes place? (If this is a reasonable approach when using Nix?)
The NixOS 18.09 caddy package.
The NixOS 18.09 caddy service.
I believe that when writing a package a builder script (Bash or otherwise) can be assigned, and I'm thinking the line insertion could be done in it. But I'm lost as to how to assign a script to an existing package in this situation (override an attribute/use an overlay?) and where to put the script on the disk.
Status update
I've been doing some reading on customising packages in general and it sounds like overlays might be what I need. However, I don't seem to be able to get my overlay evaluated.
I'm using overriding of the package name as a test as it's simpler than patching code.
Overlay attempt 1
/etc/nixos/configuration.nix:
{ config, pkgs, options, ... }:
{
imports = [ <nixpkgs/nixos/modules/installer/virtualbox-demo.nix> ];
nix.nixPath = options.nix.nixPath.default ++ [
"nixpkgs-overlays=/etc/nixos/overlays-compat/"
];
# ...
}
/etc/nixos/overlays-compat/overlays.nix:
self: super:
with super.lib;
let
# Using the nixos plumbing that's used to evaluate the config...
eval = import <nixpkgs/nixos/lib/eval-config.nix>;
# Evaluate the config,
paths = (eval {modules = [(import <nixos-config>)];})
# then get the `nixpkgs.overlays` option.
.config.nixpkgs.overlays
;
in
foldl' (flip extends) (_: super) paths self
/etc/nixos/overlays-compat/caddy.nix:
self: super:
{
caddy = super.caddy.override {
name = "caddy-override";
};
}
Overlay attempt 2
/etc/nixos/configuration.nix:
nixpkgs.overlays = [ (self: super: {
caddy = super.caddy.override {
name = "caddy-override";
};
} ) ];
error: anonymous function at /nix/store/mr5sfmz6lm5952ch5q6v49563wzylrkx-nixos-18.09.2327.37694c8cc0e/nixos/pkgs/servers/caddy/default.nix:1:1 called with unexpected argument 'name', at /nix/store/mr5sfmz6lm5952ch5q6v49563wzylrkx-nixos-18.09.2327.37694c8cc0e/nixos/lib/customisation.nix:69:12
overrideAttrs
I previously managed to override the package name with this:
{ config, pkgs, options, ... }:
let
caddyOverride = pkgs.caddy.overrideAttrs (oldAttrs: rec {
name = "caddy-override-v${oldAttrs.version}";
});
in {
{
# ...
services.caddy = {
package = caddyOverride;
# ...
}
}
I could see in htop that the caddy binary was in a folder called /nix/store/...-caddy-override-v0.11.0-bin/. But I understand that overriding in this way has been superseded by overlays.
In order to add plugins to Caddy, it seems that the method is to modify the source.
You will need to adapt the Nixpkgs expression for Caddy to make that possible. That can be done outside the Nixpkgs tree, using services.caddy.package = callPackage ./my-caddy.nix {} for example, or by forking the Nixpkgs repository and pointing your NIX_PATH to your clone.
There is an issue for Caddy plugins: https://github.com/NixOS/nixpkgs/issues/14671
PR welcome!
The latest version of notion is available in the unstable branch. I want my install of nixos 17.03 to use it. Here is my configuration.
I override notion with pkgsUnstable.notion.
nixpkgs.config = {
allowUnfree = true;
packageOverrides = let pkgsUnstable = import (
fetchTarball https://github.com/NixOS/nixpkgs-channels/archive/nixos-unstable.tar.gz
) { }; in pkgs:
rec {
visualvm = pkgsUnstable.visualvm;
notion = pkgsUnstable.notion;
};
};
And I added notion to environment.systemPackages. I also have services.xserver.winowManager.notion.eable = true;
With this setup I can get visualvm updated from unstable but when I check the version of notion with notion -version I get 3-2015061300. It should be 3-2017050501.
How can I get the updated version of notion?
to experiment with upstream changes i want to alter the src= attribute in pkgs.python27Packages.bepasty-server.
reading through https://nixos.org/nixpkgs/manual/#chap-functions there is no example how to do this for pythonPackages!
so i have tried the stuff below, which i found in some xml-code for the documentation. but it doesn't work ... which is the part where i need your help!
packageOverrides
idea
nixpkgs.config.packageOverrides = super: {
python27Packages.bepasty-server = (pkgs.python27Packages.bepasty-server.overrideAttrs (oldAttrs: {
src = pkgs.fetchgit {
url = "https://github.com/bepasty/bepasty-server";
sha256 = "1ziqshmsf0rjvdhhca55sm0x8jz76fsf2q4rwh4m6lpcf8wr0nps";
rev = "e2516e8cf4f2afb5185337073607eb9e84a61d2d";
};
}));
results in this:
building Nix...
building the system configuration...
error: attribute ‘gunicorn’ missing, at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/misc/bepasty.nix:5:14
(use ‘--show-trace’ to show detailed location information)
reducing the code
nixpkgs.config.packageOverrides = super: {
python27Packages.bepasty-server = pkgs.python27Packages.bepasty-server;
};
results in:
[root#nixdoc:~/nixpkgs]# nixos-rebuild build
building Nix...
building the system configuration...
error: attribute ‘gunicorn’ missing, at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/misc/bepasty.nix:5:14
(use ‘--show-trace’ to show detailed location information)
so it seems this won't work at all, but why?
systemPackages
in contrast, here it seems to be working:
environment.systemPackages = with pkgs; [
(python27Packages.bepasty-server.overrideAttrs (oldAttrs: {
src = pkgs.fetchgit {
url = "https://github.com/bepasty/bepasty-server";
sha256 = "1ziqshmsf0rjvdhhca55sm0x8jz76fsf2q4rwh4m6lpcf8wr0nps";
rev = "e2516e8cf4f2afb5185337073607eb9e84a61d2d";
};
}))
file
# gcc-wrapper
gdb
gnumake
gnutls
psmisc
# tlspool
wireshark-cli
gnutls
however, i don't need bepasty-server binaries in the interactive environment but instead i need to override pkgs so the bepasty service will use it!
thanks to lassulus!
here is what works now:
nixpkgs.config.packageOverrides = super: {
pythonPackages = super.pythonPackages // { bepasty-server = super.python27Packages.bepasty-server.overrideAttrs (oldAttrs: {
src = pkgs.fetchgit {
url = "https://github.com/bepasty/bepasty-server";
sha256 = "9ziqshmsf0rjvdhhca55sm0x8jz76fsf2q4rwh4m6lpcf8wr0nps";
#sha256 = "5ziqshmsf0rjvdhhca55sm0x8jz76fsf2q4rwh4m6lpcf8wr0nps";
#sha256 = "7ziqshmsf0rjvdhhca55sm0x8jz76fsf2q4rwh4m6lpcf8wr0nps";
rev = "e2516e8cf4f2afb5185337073607eb9e84a61d2d";
};
});
};
};