ladybird/Documentation/HelixConfiguration.md

Helix Configuration

Helix comes with support for clangd and clang-format out of the box! However, a small bit of configuration is needed for it to work correctly with Ladybird.

The following .clangd should be placed in the project root:

CompileFlags:
  CompilationDatabase: Build/ladybird

Diagnostics:
  UnusedIncludes: None
  MissingIncludes: None

You also need to configure the clangd server to not insert headers improperly. To do this, create a .helix/languages.toml file in the project root:

[language-server.ladybird]
command = "clangd"
args = ["--header-insertion=never"]

[[language]]
name = "cpp"
language-servers = ["ladybird"]