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-rw-r--r--distro/pkg/nix/default.nix126
1 files changed, 126 insertions, 0 deletions
diff --git a/distro/pkg/nix/default.nix b/distro/pkg/nix/default.nix
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+++ b/distro/pkg/nix/default.nix
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+{ lib, stdenv, fetchurl
+# native deps.
+, runCommand, pkg-config, meson, ninja, makeWrapper
+# build+runtime deps.
+, knot-dns, luajitPackages, libuv, gnutls, lmdb
+, jemalloc, systemd, libcap_ng, dns-root-data, nghttp2 # optionals, in principle
+# test-only deps.
+, cmocka, which, cacert
+, extraFeatures ? false /* catch-all if defaults aren't enough */
+}:
+let # un-indented, over the whole file
+
+result = if extraFeatures then wrapped-full else unwrapped;
+
+inherit (lib) optional optionals optionalString;
+lua = luajitPackages;
+
+unwrapped = stdenv.mkDerivation rec {
+ pname = "knot-resolver";
+ version = "{{ version }}";
+
+ src = fetchurl {
+ url = "https://secure.nic.cz/files/knot-resolver/${pname}-${version}.tar.xz";
+ sha256 = "{{ src_hash }}";
+ };
+
+ outputs = [ "out" "dev" ];
+
+ # Path fixups for the NixOS service.
+ postPatch = ''
+ patch meson.build <<EOF
+ @@ -50,2 +50,2 @@
+ -systemd_work_dir = prefix / get_option('localstatedir') / 'lib' / 'knot-resolver'
+ -systemd_cache_dir = prefix / get_option('localstatedir') / 'cache' / 'knot-resolver'
+ +systemd_work_dir = '/var/lib/knot-resolver'
+ +systemd_cache_dir = '/var/cache/knot-resolver'
+ EOF
+
+ # ExecStart can't be overwritten in overrides.
+ # We need that to use wrapped executable and correct config file.
+ sed '/^ExecStart=/d' -i systemd/kresd@.service.in
+ ''
+ # some tests have issues with network sandboxing, apparently
+ + optionalString doInstallCheck ''
+ echo 'os.exit(77)' > daemon/lua/trust_anchors.test/bootstrap.test.lua
+ sed -E '/^[[:blank:]]*test_(dstaddr|headers),?$/d' -i \
+ tests/config/doh2.test.lua modules/http/http_doh.test.lua
+ '';
+
+ preConfigure = ''
+ patchShebangs scripts/
+ '';
+
+ nativeBuildInputs = [ pkg-config meson ninja ];
+
+ # http://knot-resolver.readthedocs.io/en/latest/build.html#requirements
+ buildInputs = [ knot-dns lua.lua libuv gnutls lmdb ]
+ ++ optionals stdenv.isLinux [ systemd libcap_ng ]
+ ++ [ jemalloc nghttp2 ]
+ ## optional dependencies; TODO: dnstap
+ ;
+
+ mesonFlags = [
+ "-Dkeyfile_default=${dns-root-data}/root.ds"
+ "-Droot_hints=${dns-root-data}/root.hints"
+ "-Dinstall_kresd_conf=disabled" # not really useful; examples are inside share/doc/
+ "-Dmalloc=jemalloc"
+ "--default-library=static" # not used by anyone
+ ]
+ ++ optional doInstallCheck "-Dunit_tests=enabled"
+ ++ optional (doInstallCheck && !stdenv.isDarwin) "-Dconfig_tests=enabled"
+ ++ optional stdenv.isLinux "-Dsystemd_files=enabled" # used by NixOS service
+ #"-Dextra_tests=enabled" # not suitable as in-distro tests; many deps, too.
+ ;
+
+ postInstall = ''
+ rm "$out"/lib/libkres.a
+ rm "$out"/lib/knot-resolver/upgrade-4-to-5.lua # not meaningful on NixOS
+ '' + optionalString stdenv.targetPlatform.isLinux ''
+ rm -r "$out"/lib/sysusers.d/ # ATM more likely to harm than help
+ '';
+
+ doInstallCheck = with stdenv; hostPlatform == buildPlatform
+ && !(isDarwin && isAarch64); # avoid luarocks, as it's broken ATM on the platform
+ installCheckInputs = [ cmocka which cacert lua.cqueues lua.basexx lua.http ];
+ installCheckPhase = ''
+ meson test --print-errorlogs
+ '';
+
+ meta = with lib; {
+ description = "Caching validating DNS resolver, from .cz domain registry";
+ homepage = "https://knot-resolver.cz";
+ license = licenses.gpl3Plus;
+ platforms = platforms.unix;
+ maintainers = [ maintainers.vcunat /* upstream developer */ ];
+ };
+};
+
+wrapped-full = runCommand unwrapped.name
+ {
+ nativeBuildInputs = [ makeWrapper ];
+ buildInputs = with luajitPackages; [
+ # For http module, prefill module, trust anchor bootstrap.
+ # It brings lots of deps; some are useful elsewhere (e.g. cqueues).
+ http
+ # psl isn't in nixpkgs yet, but policy.slice_randomize_psl() seems not important.
+ ];
+ preferLocalBuild = true;
+ allowSubstitutes = false;
+ }
+ ''
+ mkdir -p "$out"/bin
+ makeWrapper '${unwrapped}/bin/kresd' "$out"/bin/kresd \
+ --set LUA_PATH "$LUA_PATH" \
+ --set LUA_CPATH "$LUA_CPATH"
+
+ ln -sr '${unwrapped}/share' "$out"/
+ ln -sr '${unwrapped}/lib' "$out"/ # useful in NixOS service
+ ln -sr "$out"/{bin,sbin}
+
+ echo "Checking that 'http' module loads, i.e. lua search paths work:"
+ echo "modules.load('http')" > test-http.lua
+ echo -e 'quit()' | env -i "$out"/bin/kresd -a 127.0.0.1#53535 -c test-http.lua
+ '';
+
+in result