149 lines
4.2 KiB
Bash
Executable File
149 lines
4.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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IsRubyGem() {
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test 200 = "$(curl -sL -w '%{http_code}' https://rubygems.org/api/v1/gems/$1.json -o /dev/null)";
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};
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Map() {
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while read Line; do $* $Line; done
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};
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Filter() {
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X() { $* && (shift; echo $*;) }; Map X $*
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};
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TopLevelDependencies() {
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( # Nanoc isn't an explicit dependency:
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echo nanoc;
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# We want its filters too; and those aren't referenced in the gemspec.
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# But we really don't need all of them. (There are a lot.)
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# For now they're being incorporated on an ad-hoc basis:
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tr ' ' '\n' <<< "sass kramdown erubis pygments.rb w3c_validators builder";
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# Local requires, hopefully there aren't any gems named differently from their imports.
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grep -Proh "(?<=require ['\"])[^/'\"]+" ..;
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) | sort -u | Filter IsRubyGem
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};
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GetLatestVersion() {
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curl -sL https://rubygems.org/api/v1/gems/$1.json | jq -r '.version'
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};
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read -r -d '' AWKPrelude <<EOF
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@include "join";
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function unescape(str) {
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gsub(">",">",str);
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gsub("<","<",str);
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gsub(/^= /,"== ",str);
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return str;
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}
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function ver(str) {
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n=split(str,xs,".");
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v=xs[1]; for(i=2;i<=n;i++)
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v+=xs[i]*(10**(1-i));
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return v
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}
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function unwakka(str) {
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if (str ~ /^~>/) {
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sub(/^[^ ]+ */,"",str);
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n=split(str,xs,".");xs[n-1]++;xs[n]=0;
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return(sprintf(">= %s, < %s", str, join(xs,1,n,".")));
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} else return str
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};
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EOF
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CompileConstraint() {
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awk "$AWKPrelude"'
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NF {
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printf "%s;", $1;
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sub(".*" $1 FS, "");
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sub($0, unwakka(unescape($0)));
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split($0, xs, ", "); for (x in xs)
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split(xs[x],ys," ");
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printf "ver($0) %s %s && ", ys[1], ver(ys[2])
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print "1"
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}
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';
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};
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SatisfyConstraint() {
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GemName="$1"; Constraint="$2";
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curl -s https://rubygems.org/api/v1/versions/$GemName.json \
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| jq -r '.[] | .number' \
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| awk "$AWKPrelude ($Constraint){print;exit}"
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};
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GetDependencies() {
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# The RubyGems API doesn't seem to permit retrieving the dependencies of any
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# version other than the most recent, so we resort to scraping.
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GemName="$1"; GemVersion="$2";
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curl -s https://rubygems.org/gems/$GemName/versions/$GemVersion \
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| xmllint --xpath '//div[@id="runtime_dependencies"]/div/a//text()' --html 2>/dev/null - \
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| CompileConstraint \
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| { IFS=";"; while read -r Name Constraint; do
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Version="$(SatisfyConstraint "$Name" "$Constraint")"
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test -n "$Name" && test -n "$Version" && echo "$Name" "$Version"
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done; }
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};
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GetSHA256() {
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nix-prefetch-url https://rubygems.org/downloads/$1.gem 2>/dev/null
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};
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GemCache="$(mktemp ${TMPDIR:-/tmp}/GEMS.XXXXXXX)";
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Gem2Nix() {
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GemName=$1; GemVersion="${2:-$(GetLatestVersion $GemName)}";
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grep -qE "^$GemName" "$GemCache" || {
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echo $GemName >> "$GemCache";
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sed 's/^ //;/^$/d' <<< "
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$GemName = buildRubyGem ({
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name = ''$GemName-$GemVersion'';
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sha256 = ''$(GetSHA256 $GemName-$GemVersion)'';
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gemPath = [$(GetDependencies "$GemName" "$GemVersion" | cut -d' ' -f1 | tr '\n' ' ')];
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ruby = ruby_2_2;
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} // optionalAttrs (hasAttr ''$GemName'' hotfix) hotfix.$GemName);
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"; GetDependencies "$GemName" "$GemVersion" | Map Gem2Nix
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};
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};
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cat <<EOF
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{ pkgs ? import <nixpkgs> {}
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}: let
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inherit (pkgs)
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callPackage buildRubyGem lib ruby_2_2 libtidy
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perlPackages pythonPackages glibcLocales;
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inherit (lib) optionalAttrs hasAttr mapAttrs;
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hotfix = mapAttrs (_: f: f {}) (callPackage <nixpkgs/pkgs/development/interpreters/ruby/bundler-env/default-gem-config.nix> {}) // {
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tidy_ffi = {
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postInstall = ''
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substituteInPlace \$out/lib/ruby/gems/2.2.0/gems/tidy_ffi-0.1.6/lib/tidy_ffi/lib_tidy.rb --replace 'usr' \${libtidy}
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'';
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};
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};
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EOF
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TopLevelDependencies | Map Gem2Nix
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cat <<EOF
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in pkgs.stdenv.mkDerivation {
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name = "muflax.com";
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src = ../.;
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LC_ALL="en_US.utf8";
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buildInputs =
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[$(TopLevelDependencies | tr '\n' ' ')] ++
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[perlPackages.ImageExifTool pythonPackages.pygments glibcLocales];
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patchPhase = ''
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sed -i 's/do$/do |_, _|/' commands/backup/*
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'';
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buildPhase = ''
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nanoc references
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nanoc images
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for site in blog daily gospel muflax; do
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nanoc compile -s \$site
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nanoc compress -s \$site
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done
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'';
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installPhase = ''
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mv out \$out
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'';
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}
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EOF
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