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|
/*
This is the library of nix builders. Some rules to follow:
- Keep this code as minimal as possible. I'd rather write Haskell than Nix,
wouldn't you?
- Try to reuse as much upstream Nix as possible.
*/
{
analysisJSON,
bild,
}:
with bild; let
analysis = builtins.fromJSON analysisJSON;
# common bash functions for the builder
commonBash = builtins.toFile "common.bash" ''
# Check that a command succeeds, fail and log if not.
function check {
$@ || { echo "fail: $name: $3"; exit 1; }
}
'';
build = _: target: let
name = target.out;
root = builtins.getEnv "CODEROOT";
mainModule = target.mainModule;
compileLine =
lib.strings.concatStringsSep " "
([target.compiler] ++ target.compilerFlags);
allSources = target.srcs ++ [target.quapath];
isEmpty = x: x == null || x == [];
skip = ["_" ".direnv"];
# Normalize paths by removing leading "./"
normalize = p: lib.strings.removePrefix "./" p;
# Given a list of path parts, produce all cumulative prefixes:
# ["a","b","c"] -> ["a","a/b","a/b/c"]
dirPrefixes = parts:
if parts == []
then []
else let
hd = lib.lists.head parts;
tl = lib.lists.tail parts;
rest = dirPrefixes tl;
in
[hd] ++ (lib.lists.map (r: "${hd}/${r}") rest);
# Normalize all source file paths (relative to root)
allSourcesRel = lib.lists.map normalize allSources;
# Allowed directories are the ancestors of all source files, plus the repo root ""
allowedDirs = lib.lists.unique (
[""]
++ lib.lists.concatMap
(p: let
parts = lib.strings.splitString "/" p;
in
dirPrefixes (lib.lists.init parts))
allSourcesRel
);
filter = file: type:
if lib.lists.elem (builtins.baseNameOf file) skip
then false
else if type == "directory"
then let
rel = lib.strings.removePrefix "${root}/" file;
rel' = normalize rel;
in
lib.lists.elem rel' allowedDirs
else if type == "regular"
then let
rel = lib.strings.removePrefix "${root}/" file;
rel' = normalize rel;
in
lib.lists.elem rel' allSourcesRel
else false;
# remove empty directories, leftover from the src filter
preBuild = "find . -type d -empty -delete";
src = lib.sources.cleanSourceWith {
inherit filter;
src = lib.sources.cleanSource root;
};
langdeps_ =
if isEmpty target.langdeps
then []
else
lib.attrsets.attrVals target.langdeps (lib.attrsets.getAttrFromPath
(lib.strings.splitString "." target.packageSet)
bild);
sysdeps_ =
if isEmpty target.sysdeps
then []
else lib.attrsets.attrVals target.sysdeps pkgs;
rundeps_ =
if isEmpty target.rundeps
then []
else lib.attrsets.attrVals target.rundeps pkgs;
CODEROOT = ".";
builders = {
base = stdenv.mkDerivation rec {
inherit name src CODEROOT preBuild;
buildInputs = langdeps_ ++ sysdeps_;
installPhase = "install -D ${name} $out/bin/${name}";
buildPhase = compileLine;
};
haskell = stdenv.mkDerivation rec {
inherit name src CODEROOT preBuild;
nativeBuildInputs = [makeWrapper];
buildInputs =
sysdeps_
++ [
(haskell.ghcWith (p: (lib.attrsets.attrVals target.langdeps p)))
];
buildPhase = compileLine;
installPhase = ''
install -D ${name} $out/bin/${name}
wrapProgram $out/bin/${name} \
--prefix PATH : ${lib.makeBinPath rundeps_}
'';
};
c = stdenv.mkDerivation rec {
inherit name src CODEROOT preBuild;
buildInputs = langdeps_ ++ sysdeps_;
installPhase = "install -D ${name} $out/bin/${name}";
buildPhase = lib.strings.concatStringsSep " " [
compileLine
(
if isEmpty langdeps_
then ""
else "$(pkg-config --cflags ${
lib.strings.concatStringsSep " " target.langdeps
})"
)
(
if isEmpty sysdeps_
then ""
else "$(pkg-config --libs ${
lib.strings.concatStringsSep " " target.sysdeps
})"
)
];
};
python = python.buildPythonApplication rec {
inherit name src CODEROOT;
nativeBuildInputs = [makeWrapper];
propagatedBuildInputs = langdeps_ ++ sysdeps_ ++ rundeps_;
buildInputs = sysdeps_;
nativeCheckInputs = [pkgs.ruff python.packages.mypy];
checkPhase = ''
. ${commonBash}
cp ${../../pyproject.toml} ./pyproject.toml
check ruff format --exclude 'setup.py' --check .
# ignore EXE here to support run.sh shebangs
check ruff check \
--ignore EXE \
--exclude 'setup.py' \
--exclude '__init__.py' \
.
touch ./py.typed
check python -m mypy \
--explicit-package-bases \
--no-color-output \
--exclude 'setup\.py$' \
.
'';
installCheck = ''
. ${commonBash}
check python -m ${mainModule} test
'';
preBuild = ''
# remove empty directories, leftover from the src filter
find . -type d -empty -delete
# initialize remaining dirs as python modules
find . -type d -exec touch {}/__init__.py \;
# generate a minimal setup.py
cat > setup.py << EOF
from setuptools import find_packages, setup
setup(
name="${name}",
entry_points={"console_scripts":["${name} = ${mainModule}:main"]},
version="0.0.0",
url="https://git.bensima.com/omni.git",
author="dev",
author_email="dev@bensima.com",
description="nil",
packages=find_packages(),
install_requires=[],
)
EOF
'';
pythonImportsCheck = [mainModule]; # sanity check
};
};
in
builders.${target.builder};
# the bild caller gives us the Analysis type, which is a hashmap, but i need to
# return a single drv, so just take the first one for now. ideally i would only
# pass Target, one at a time, (perhaps parallelized in haskell land) and then i
# wouldn't need all of this let nesting
in
builtins.head (lib.attrsets.mapAttrsToList build analysis)
|
