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grammars.nix: allow the user to apply overlays (#8749)

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You can now apply overlays to the grammar derivations via
`grammarOverlays`. Also, the `src` in the derivation is now properly
unpacked to the build directory, allowing the user to mutate the source
files if they want to.
This commit is contained in:
mydumpfire 2023-11-09 15:56:57 +07:00 committed by GitHub
parent 4229583631
commit 6ab774da0b
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1 changed files with 24 additions and 21 deletions
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45
grammars.nix
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@ -5,6 +5,7 @@
runCommand,
yj,
includeGrammarIf ? _: true,
grammarOverlays ? [],
...
}: let
# HACK: nix < 2.6 has a bug in the toml parser, so we convert to JSON
@ -48,22 +49,22 @@
then sourceGitHub
else sourceGit;
in
stdenv.mkDerivation rec {
stdenv.mkDerivation {
# see https://github.com/NixOS/nixpkgs/blob/fbdd1a7c0bc29af5325e0d7dd70e804a972eb465/pkgs/development/tools/parsing/tree-sitter/grammar.nix
pname = "helix-tree-sitter-${grammar.name}";
version = grammar.source.rev;
src =
if builtins.hasAttr "subpath" grammar.source
then "${source}/${grammar.source.subpath}"
else source;
src = source;
sourceRoot = if builtins.hasAttr "subpath" grammar.source then
"source/${grammar.source.subpath}"
else
"source";
dontUnpack = true;
dontConfigure = true;
FLAGS = [
"-I${src}/src"
"-Isrc"
"-g"
"-O3"
"-fPIC"
@ -76,13 +77,13 @@
buildPhase = ''
runHook preBuild
if [[ -e "$src/src/scanner.cc" ]]; then
$CXX -c "$src/src/scanner.cc" -o scanner.o $FLAGS
elif [[ -e "$src/src/scanner.c" ]]; then
$CC -c "$src/src/scanner.c" -o scanner.o $FLAGS
if [[ -e src/scanner.cc ]]; then
$CXX -c src/scanner.cc -o scanner.o $FLAGS
elif [[ -e src/scanner.c ]]; then
$CC -c src/scanner.c -o scanner.o $FLAGS
fi
$CC -c "$src/src/parser.c" -o parser.o $FLAGS
$CC -c src/parser.c -o parser.o $FLAGS
$CXX -shared -o $NAME.so *.o
ls -al
@ -105,15 +106,17 @@
'';
};
grammarsToBuild = builtins.filter includeGrammarIf gitGrammars;
builtGrammars =
builtins.map (grammar: {
inherit (grammar) name;
artifact = buildGrammar grammar;
})
grammarsToBuild;
grammarLinks =
builtins.map (grammar: "ln -s ${grammar.artifact}/${grammar.name}.so $out/${grammar.name}.so")
builtGrammars;
builtGrammars = builtins.map (grammar: {
inherit (grammar) name;
value = buildGrammar grammar;
}) grammarsToBuild;
extensibleGrammars =
lib.makeExtensible (self: builtins.listToAttrs builtGrammars);
overlayedGrammars = lib.pipe extensibleGrammars
(builtins.map (overlay: grammar: grammar.extend overlay) grammarOverlays);
grammarLinks = lib.mapAttrsToList
(name: artifact: "ln -s ${artifact}/${name}.so $out/${name}.so")
(lib.filterAttrs (n: v: lib.isDerivation v) overlayedGrammars);
in
runCommand "consolidated-helix-grammars" {} ''
mkdir -p $out