Support for .tpf (Helm chart Yaml-based template files)

[mickaelistria]

It seems like Helm Chart files are basically Kubernetes yaml files with templating capability in {{...}} blocks.
It would be nice if Yaml Language Server could provide support for those files (by pre-setting schema, allowing validation/completion in {{...}} and so on.

[nklmilojevic]

What is needed for this to be added - how we can help? There is https://github.com/Azure/vscode-kubernetes-tools/blob/master/syntaxes/helm.tmLanguage.json which VSCode uses to correctly highlight Helm template syntax.

[valorl]

There seems to be a tree-sitter grammar for go templates. It might be useful here.

With tree-sitter and this grammar, the template blocks can be fully parsed into an AST that could be used for functionality beyond highlighting, such as diagnostics, autocomplete, etc.

https://github.com/ngalaiko/tree-sitter-go-template

[luisdavim]

It would be nice to make this work with templates in general and not just helm templates, {{...}} is the default delimiter set but it can be customised, and we also have Jinja and ERB....

[kekscode]

Just revisiting after nearly a year. Any new solutions or workarounds? @luisdavim any thoughts?

[Kerwood]

Would be nice to see this feature.

[luisdavim]

There is there now: https://github.com/mrjosh/helm-ls

[luisdavim]

This is the setup I landed on, install these 2 plugins:

• https://github.com/mrjosh/helm-ls - helm language server
• https://github.com/towolf/vim-helm - adds syntax higlighting for helm templates and sets the file type to helm (this is the important part)

Then configure the language server to run helm-ls for helm files, in my case, I use https://github.com/neoclide/coc.nvim so I have:

"languageserver": {
  "helm": {
    "command": "helm_ls",
    "args": ["serve"],
    "filetypes": ["helm", "helmfile"],
    "rootPatterns": ["Chart.yaml"]
  }
}

This solves the problems with all the diagnostics errors from yaml ls but still uses it under the covers if installed.
There's a TreeSitter gramar for helm so that also works out nicely.