Added some LSP servers and updated python's roots

[arenekosreal]

• Added csharp-ls for C# LSP server
• Added pyright for Python LSP server
• Updated python's roots for better determination of project root
• Added pylyzer for Python LSP server

Note: All LSP servers are not set to default, they are just for people who prefer them.

[David-Else]

@oyarsa @zhanghua000 If I don't add:

languages.toml

[language-server.pyright]
config = {}

with a pyproject.toml in my project root (other config files may also work)

[tool.pyright]
typeCheckingMode  = "strict"

Then pyright does not work, discussed in #5479 but not really resolved. I spent hours fiddling around with this and still don't really get it. Should we just add config = {} to the default or maybe there is something better? Anyone got this working as if with just adding language-servers = [ "pyright" ]?

[the-mikedavis]

Yeah I think we should add config = {} to the pyright config. Without it pyright times out for nearly every request (#8020 (comment))

[David-Else]

@the-mikedavis How is that done? Adding:

pyright = { command = "pyright-langserver", args = ["--stdio"], config = {} }

to the main languages.toml does not seem to work, would it be:

pyright = { command = "pyright-langserver", args = ["--stdio"] }
[language-server.pyright]
config = {}

[the-mikedavis]

That first change works for me

diff --git a/languages.toml b/languages.toml
index 2477f1ad..011ab278 100644
--- a/languages.toml
+++ b/languages.toml
@@ -55,7 +55,7 @@ perlnavigator = { command = "perlnavigator", args= ["--stdio"] }
 prisma-language-server = { command = "prisma-language-server", args = ["--stdio"] }
 purescript-language-server = { command = "purescript-language-server", args = ["--stdio"] }
 pylsp = { command = "pylsp" }
-pyright = { command = "pyright-langserver", args = ["--stdio"] }
+pyright = { command = "pyright-langserver", args = ["--stdio"], config = {} }
 pylyzer = { command = "pylyzer", args = ["--server"] }
 qmlls = { command = "qmlls" }
 r = { command = "R", args = ["--no-echo", "-e", "languageserver::run()"] }

where I also have a .helix/languages.toml to select pyright:

[[language]]
name = "python"
language-servers = ["pyright"]

[David-Else]

That first change works for me

diff --git a/languages.toml b/languages.toml
index 2477f1ad..011ab278 100644
--- a/languages.toml
+++ b/languages.toml
@@ -55,7 +55,7 @@ perlnavigator = { command = "perlnavigator", args= ["--stdio"] }
 prisma-language-server = { command = "prisma-language-server", args = ["--stdio"] }
 purescript-language-server = { command = "purescript-language-server", args = ["--stdio"] }
 pylsp = { command = "pylsp" }
-pyright = { command = "pyright-langserver", args = ["--stdio"] }
+pyright = { command = "pyright-langserver", args = ["--stdio"], config = {} }
 pylyzer = { command = "pylyzer", args = ["--server"] }
 qmlls = { command = "qmlls" }
 r = { command = "R", args = ["--no-echo", "-e", "languageserver::run()"] }

where I also have a .helix/languages.toml to select pyright:

[[language]]
name = "python"
language-servers = ["pyright"]

I had a typo, it does indeed work, and I have made a PR #8032