I’m attempting to add the apple-emoji-linux font to my personal flake repo (not Nixpkgs because of potential legal issues). Now, I’ve already managed to get a “binary” version of the package working: it gets the release from GitHub and unpacks it and that’s it…and that works fine—but I’d like to also build it from source, because why not?
My flake.nix looks like:
{
description = "fum's various flakes that aren't good enough to upstream to nixpkgs";
# i want to depend on the system's nixpkgs? not sure if this works
# inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
outputs =
{ nixpkgs, ... }:
let
# ...instead of flake-utils
# https://isabelroses.com/blog/im-not-mad-im-disappointed-10
forAllSystems =
function:
nixpkgs.lib.genAttrs nixpkgs.lib.systems.flakeExposed (
system: function nixpkgs.legacyPackages.${system}
);
in
{
packages = forAllSystems (pkgs: {
apple-color-emoji = pkgs.callPackage ./fonts/apple-color-emoji.nix { };
apple-color-emoji-src = pkgs.callPackage ./fonts/apple-color-emoji-src.nix { };
});
};
}
And fonts/apple-color-emoji.nix looks like:
{ pkgs, ... }:
pkgs.stdenvNoCC.mkDerivation rec {
pname = "apple-color-emoji";
version = "17.4";
dontUnpack = true;
src = pkgs.fetchurl {
url = "https://github.com/samuelngs/apple-emoji-linux/releases/download/v${version}/AppleColorEmoji.ttf";
hash = "sha256-SG3JQLybhY/fMX+XqmB/BKhQSBB0N1VRqa+H6laVUPE=";
};
installPhase = ''
mkdir -p $out/share/fonts/truetype
cp $src $out/share/fonts/truetype
'';
meta = {
description = "A derivation for the Apple Color Emoji font";
};
}
Running nix build .#apple-color-emoji makes a result symlink, just like you’d expect, with a .ttf in result/share/fonts/truetype.
apple-color-emoji-src.nix, however, looks like:
{
stdenv,
fetchFromGitHub,
python3,
optipng,
zopfli,
pngquant,
imagemagick,
}:
stdenv.mkDerivation rec {
pname = "apple-color-emoji-src";
version = "17.4";
src = fetchFromGitHub {
owner = "samuelngs";
repo = "apple-emoji-linux";
tag = "v${version}";
hash = "sha256-liklPjOJhHOBWQH8AQwkLfIG0KIqdnZcVAa7oMrVZMk=";
};
# enableParallelBuilding = true;
nativeBuildInputs = [
(python3.withPackages (
python-pkgs: with python-pkgs; [
fonttools
nototools
]
))
optipng
zopfli
pngquant
imagemagick
];
installPhase = ''
runHook preInstall
mkdir -p $out/share/fonts/truetype
cp ./AppleColorEmoji.ttf $out/share/fonts/truetype
runHook postInstall
'';
meta = {
description = "A derivation for the Apple Color Emoji font";
};
}
Attempting to nix build .#apple-color-emoji-src fails because it can’t find zopflipng:
$ nix build .\#apple-color-emoji-src
warning: Git tree '/home/fumnanya/Downloads/flakes' is dirty
warning: updating lock file '/home/fumnanya/Downloads/flakes/flake.lock':
• Added input 'nixpkgs':
'path:/nix/store/593xvgv994xlkm5mb7w4p1xxnzrs9wv6-source?lastModified=0&narHash=sha256-WGaHVAjcrv%2BCun7zPlI41SerRtfknGQap281%2BAakSAw%3D' (1970-01-01)
warning: Git tree '/home/fumnanya/Downloads/flakes' is dirty
error: builder for '/nix/store/sv5vp8r2342x0kv5pfkam7lvnk7b2s3x-apple-color-emoji-src-17.4.drv' failed with exit code 2;
last 15 log lines:
> Running phase: unpackPhase
> unpacking source archive /nix/store/pvy9am729cnxvvzg7saxnhvjdpn9vqja-source
> source root is source
> Running phase: patchPhase
> Running phase: updateAutotoolsGnuConfigScriptsPhase
> Running phase: configurePhase
> no configure script, doing nothing
> Running phase: buildPhase
> build flags: SHELL=/nix/store/11ciq72n4fdv8rw6wgjgasfv4mjs1jrw-bash-5.2p37/bin/bash
> /nix/store/11ciq72n4fdv8rw6wgjgasfv4mjs1jrw-bash-5.2p37/bin/bash: line 1: which: command not found
> /nix/store/11ciq72n4fdv8rw6wgjgasfv4mjs1jrw-bash-5.2p37/bin/bash: line 1: which: command not found
> /nix/store/11ciq72n4fdv8rw6wgjgasfv4mjs1jrw-bash-5.2p37/bin/bash: line 1: which: command not found
> mkdir -p "build/emoji"
> mkdir -p "build/quantized_pngs"
> Makefile:85: *** "neither zopflipng nor optipng is available". Stop.
For full logs, run 'nix log /nix/store/sv5vp8r2342x0kv5pfkam7lvnk7b2s3x-apple-color-emoji-src-17.4.drv'.
…which is puzzling, because if we enter the environment and try to build it:
$ nix develop .\#apple-color-emoji-src -i
warning: Git tree '/home/fumnanya/Downloads/flakes' is dirty
warning: updating lock file '/home/fumnanya/Downloads/flakes/flake.lock':
• Added input 'nixpkgs':
'path:/nix/store/593xvgv994xlkm5mb7w4p1xxnzrs9wv6-source?lastModified=0&narHash=sha256-WGaHVAjcrv%2BCun7zPlI41SerRtfknGQap281%2BAakSAw%3D' (1970-01-01)
warning: Git tree '/home/fumnanya/Downloads/flakes' is dirty
bash: warning: setlocale: LC_CTYPE: cannot change locale (en_US.UTF-8): No such file or directory
bash: warning: setlocale: LC_CTYPE: cannot change locale (en_US.UTF-8): No such file or directory
bash: warning: setlocale: LC_COLLATE: cannot change locale (en_US.UTF-8): No such file or directory
bash-5.2$ which zopflipng
/nix/store/hcg4p8aj4h5c5kncf03g9lppw6l4qv60-zopfli-1.0.3/bin/zopflipng
bash-5.2$ which python
/nix/store/077hwqhhq8vlvbvqzwbiznsjp8z52w7k-python3-3.12.9-env/bin/python
bash-5.2$ which convert
/nix/store/jx11ykx0nzqpxmm7f10m0ff25ml05f5a-imagemagick-7.1.1-43/bin/convert
bash-5.2$ genericBuild
Running phase: unpackPhase
unpacking source archive /nix/store/pvy9am729cnxvvzg7saxnhvjdpn9vqja-source
source root is source
Running phase: patchPhase
Running phase: updateAutotoolsGnuConfigScriptsPhase
Running phase: configurePhase
no configure script, doing nothing
Running phase: buildPhase
build flags: SHELL=/nix/store/11ciq72n4fdv8rw6wgjgasfv4mjs1jrw-bash-5.2p37/bin/bash
mkdir -p "build/emoji"
mkdir -p "build/quantized_pngs"
using zopflipng
mkdir -p "build/compressed_pngs"
WARNING: The convert command is deprecated in IMv7, use "magick" instead of "convert" or "magick convert"
WARNING: The convert command is deprecated in IMv7, use "magick" instead of "convert" or "magick convert"
^C
What am I doing wrong? Is there something I’m not setting correctly?