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flake.nix
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rec {
description = "The nixos.org homepage";
inputs = {
# This is used to build the site.
nixpkgs.url = "nixpkgs/nixos-unstable-small";
flake-parts.url = "github:hercules-ci/flake-parts";
git-hooks-nix.url = "github:cachix/git-hooks.nix";
# These inputs are used for the manuals and release artifacts
released-nixpkgs-unstable.url = "nixpkgs/nixos-unstable";
released-nixpkgs-stable.url = "nixpkgs/nixos-24.11";
released-nix-unstable.url = "github:nixos/nix/master";
released-nix-stable.url = "github:nixos/nix/latest-release";
nix-pills.url = "github:NixOS/nix-pills";
nix-pills.flake = false;
};
nixConfig = {
extra-substituters = [
"https://nixos-homepage.cachix.org"
"https://nixos-nix-install-tests.cachix.org"
];
extra-trusted-public-keys = [
"nixos-homepage.cachix.org-1:NHKBt7NjLcWfgkX4OR72q7LVldKJe/JOsfIWFDAn/tE="
"nixos-nix-install-tests.cachix.org-1:Le57vOUJjOcdzLlbwmZVBuLGoDC+Xg2rQDtmIzALgFU="
];
};
outputs =
inputs@{
self,
flake-parts,
git-hooks-nix,
nixpkgs,
released-nixpkgs-unstable,
released-nixpkgs-stable,
released-nix-unstable,
released-nix-stable,
nix-pills,
systems,
}:
flake-parts.lib.mkFlake { inherit inputs; } {
imports = [
inputs.git-hooks-nix.flakeModule
];
systems = import systems;
perSystem =
{ config, system, ... }:
let
overlay = final: prev: {
asciinema-scenario = final.rustPlatform.buildRustPackage rec {
pname = "asciinema-scenario";
version = "0.2.0";
src = final.fetchCrate {
inherit pname version;
sha256 = "sha256-qMGi+myppWBapM7TkPeXC2g/M1FA1YGwESNrx8LVXkw=";
};
cargoSha256 = "0z4iwjm38xfgipl1pcrkl8277p627pls565k7cclrhxfcx3f513p";
};
};
pkgs = import nixpkgs {
inherit system;
overlays = [ overlay ];
};
inherit (pkgs.lib) getVersion;
pkgs-unstable = import released-nixpkgs-unstable { inherit system; };
pkgs-stable = import released-nixpkgs-stable { inherit system; };
nix_stable = released-nix-stable.packages."${system}".nix;
nix_unstable = released-nix-unstable.packages."${system}".nix;
nodejs_current = pkgs.nodejs_20;
nixPills = import nix-pills {
inherit pkgs;
};
# TODO: change structure to conform to ./src/content/download/aws-ec2.yaml but in json
NIXOS_AMIS = pkgs.writeText "ec2-amis.json" (
builtins.toJSON (import (released-nixpkgs-stable + "/nixos/modules/virtualisation/ec2-amis.nix"))
);
NIX_STABLE_VERSION = getVersion nix_stable.name;
NIX_UNSTABLE_VERSION = getVersion nix_unstable.name;
NIXOS_STABLE_SERIES = pkgs-stable.lib.trivial.release;
NIXOS_UNSTABLE_SERIES = pkgs-unstable.lib.trivial.release;
redirectManualHTML = redirectURL: out: ''
cat <<EOT > ${out}
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="refresh" content="1; url='${redirectURL}'"/>
</head>
<body>
<h1>Redirecting...</h1>
<p>Please follow <a href="${redirectURL}">this link</a>.</p>
</body>
</html>
EOT
'';
manualVersionSwitch =
dir: canonical:
let
baseUrl = "https://nixos.org/${dir}/${canonical}";
in
''
project=$(basename ${dir})
# loop over each channel/version
for path in ${dir}/*; do
# loop over each html file
(cd $path && find -type f -print) | while read htmlFile; do
if [[ "$htmlFile" == *.html ]]; then
fileName=''${htmlFile#"./"}
filePath="$path/$fileName"
echo "Patching $fileName"
echo "Patching $filePath"
canonicalFileName="${dir}/${canonical}/$fileName"
canonicalUrl=$baseUrl
if [ -e $canonicalFileName ]; then
if [ "$fileName" != "index.html" ]; then
canonicalUrl="$baseUrl/$fileName"
fi
fi
canonicalTag="<link rel=\"canonical\" url=\"$canonicalUrl\" />"
if ! grep -Fq "$canonicalTag" $filePath; then
sed -i -e "s|</head>| $canonicalTag\n</head>|" $filePath
echo "Patched <head> of $filePath."
fi
injectedTag="<script src=\"/js/manual-version-switch.js\"></script>"
if ! grep -Fq "$injectedTag" $filePath; then
sed -i -e "s|</body>|\n $injectedTag\n</body>|" $filePath
echo "Injected channel switcher for $filePath."
fi
injectedTag="data-$project-channels='["
if [[ "$project" == "nix" ]]; then
injectedTag+="{\"channel\":\"unstable\",\"version\":\"${NIX_UNSTABLE_VERSION}\"},"
injectedTag+="{\"channel\":\"stable\",\"version\":\"${NIX_STABLE_VERSION}\"}"
else
injectedTag+="{\"channel\":\"unstable\",\"version\":\"${NIXOS_UNSTABLE_SERIES}\"},"
injectedTag+="{\"channel\":\"stable\",\"version\":\"${NIXOS_STABLE_SERIES}\"}"
fi
injectedTag+="]'"
if ! grep -Fq "$injectedTag" $filePath; then
sed -i -e "s|<body|<body $injectedTag|" $filePath
echo "Injected list of channels in $filePath."
fi
fi
done
done
'';
manuals =
pkgs.runCommand "manuals"
{
nativeBuildInputs = with pkgs; [
gnused
gnugrep
];
}
''
mkdir -p $out
${redirectManualHTML "/learn" "$out/index.html"}
nix_dir=$PWD/nix && mkdir -p $nix_dir
cp -R --no-preserve=mode,ownership ${nix_stable.doc}/share/doc/nix/manual $nix_dir/stable
cp -R --no-preserve=mode,ownership ${nix_unstable.doc}/share/doc/nix/manual $nix_dir/unstable
${manualVersionSwitch "$nix_dir" "stable"}
${redirectManualHTML "/manual/nix/stable" "$nix_dir/index.html"}
mv $nix_dir $out
nixpkgs_dir=$PWD/nixpkgs && mkdir -p $nixpkgs_dir
cp -R --no-preserve=mode,ownership ${
released-nixpkgs-stable.htmlDocs.nixpkgsManual.${system}
}/share/doc/nixpkgs $nixpkgs_dir/stable
cp -R --no-preserve=mode,ownership ${
released-nixpkgs-unstable.htmlDocs.nixpkgsManual.${system}
}/share/doc/nixpkgs $nixpkgs_dir/unstable
mv $nixpkgs_dir/stable/manual.html $nixpkgs_dir/stable/index.html
mv $nixpkgs_dir/unstable/manual.html $nixpkgs_dir/unstable/index.html
${manualVersionSwitch "$nixpkgs_dir" "stable"}
${redirectManualHTML "/manual/nixpkgs/stable" "$nixpkgs_dir/index.html"}
mv $nixpkgs_dir $out
nixos_dir=$PWD/nixos && mkdir -p $nixos_dir
cp -R --no-preserve=mode,ownership ${
released-nixpkgs-stable.htmlDocs.nixosManual.${system}
}/share/doc/nixos $nixos_dir/stable
cp -R --no-preserve=mode,ownership ${
released-nixpkgs-unstable.htmlDocs.nixosManual.${system}
}/share/doc/nixos $nixos_dir/unstable
${manualVersionSwitch "$nixos_dir" "stable"}
${redirectManualHTML "/manual/nixos/stable" "$nixos_dir/index.html"}
mv $nixos_dir $out
'';
pills = pkgs.runCommand "pills" { } ''
mkdir -p $out
cp -R ${nixPills.html-split}/share/doc/nix-pills/* $out
cp ${nixPills.epub}/share/doc/nix-pills/nix-pills.epub $out/nix-pills.epub
'';
demos =
pkgs.runCommand "demos"
{
nativeBuildInputs = with pkgs; [
asciinema-scenario
gnused
];
}
''
mkdir -p $out
for scenario in ${./public/demos}/*.scenario; do
scenarioFileName=$out/$(basename $scenario .scenario)
echo "Generating $scenarioFileName.cast and $scenarioFileName.svg ..."
asciinema-scenario --preview-file $scenarioFileName.svg $scenario > $scenarioFileName.cast
# XXX: this in until asciinema-scenario is fixed
# https://github.com/garbas/asciinema-scenario/issues/3
sed -i -e "s|<nixpkgs|\<nixpkgs|g" $scenarioFileName.svg
done
'';
in
{
packages.manuals = manuals;
packages.pills = pills;
packages.demos = demos;
pre-commit.settings.hooks = {
nixfmt-rfc-style = {
enable = true;
files = "\\.nix$";
};
prettier-check = {
enable = true;
name = "check-formatting";
entry = "${nodejs_current}/bin/npm run format:check";
stages = [ "pre-push" ];
pass_filenames = false;
};
};
devShells.default = pkgs.mkShell {
name = "nixos-homepage";
inputsFrom = [ config.pre-commit.devShell ];
packages = with pkgs; [
nodejs_current
netlify-cli
nixfmt-rfc-style
];
shellHook = ''
export NIX_STABLE_VERSION="${NIX_STABLE_VERSION}"
export NIX_UNSTABLE_VERSION="${NIX_UNSTABLE_VERSION}"
export NIXOS_STABLE_SERIES="${NIXOS_STABLE_SERIES}"
export NIXOS_UNSTABLE_SERIES="${NIXOS_UNSTABLE_SERIES}"
export NIXOS_AMIS="${NIXOS_AMIS}"
if [ ! -d node_modules ]; then
${nodejs_current}/bin/npm install
fi
cat >&2 << EOF
To fetch all dependencies:
npm install
Afterwards, to start a local development server:
npm run dev
Then go to the following URL in your browser:
http://localhost:4321
It will rebuild the website on each change.
To test redirects:
npm run build
cd dist
netlify dev
To re-format the source code:
npm run format
EOF
'';
};
};
};
}