[SOLVED] Using clangd with vscode to develop a flatpak

unionagainstdhmo OP , 2 days ago

I’ve worked it out, thanks for the responses, maybe I didn’t word the question properly or something, but here’s what I did for anyone interested in the future:

You only need to do this once for every machine you want to work on.

Add the llvm freedesktop sdk extensions to get a clangd executable to your flatpak manifest:

<span style="color:#183691;">"sdk-extensions"</span><span style="color:#323232;">: [
</span><span style="color:#323232;">        </span><span style="color:#183691;">"org.freedesktop.Sdk.Extension.llvm18"
</span><span style="color:#323232;">    ],
</span>

Install these extensions:

• Native Debug
• Flatpak
• Meson Build
• clangd (optional)

Run the Flatpak: Build command in the command palette (Ctrl+Shift+P) this might take a minute. Make sure you have the required sdks installed (see the manifest for details).

There should now be two folders: .flatpak and _build. There should also be a script generated at .flatpak/meson.sh. Run:

<span style="color:#323232;">python gen-flatpak-scripts.py
</span>

This will generate .flatpak/gdb.sh and .flatpak/clangd.sh. If you want to use the clangd vscode extension extension add this to .vscode/settings.json:

<span style="color:#183691;">"clangd.path"</span><span style="color:#323232;">: </span><span style="color:#183691;">"./.flatpak/clangd.sh"
</span>

Now run the clangd: Restart language server command in the command palette (Ctrl+Shift+P) and you should be good to go!

gen-flatpak-scripts.py:

<span style="font-style:italic;color:#969896;"># Simple script to generate scripts to make life easy when using flatpak with vscode
</span><span style="color:#323232;">
</span><span style="font-weight:bold;color:#a71d5d;">import </span><span style="color:#323232;">subprocess;
</span><span style="color:#323232;">
</span><span style="font-weight:bold;color:#a71d5d;">def </span><span style="font-weight:bold;color:#323232;">gen_script</span><span style="color:#323232;">(outfile, exec):
</span><span style="color:#323232;">    </span><span style="font-weight:bold;color:#a71d5d;">with </span><span style="color:#62a35c;">open</span><span style="color:#323232;">(</span><span style="color:#183691;">".flatpak/meson.sh"</span><span style="color:#323232;">, </span><span style="color:#183691;">"rt"</span><span style="color:#323232;">) </span><span style="font-weight:bold;color:#a71d5d;">as </span><span style="color:#323232;">fin:
</span><span style="color:#323232;">        </span><span style="font-weight:bold;color:#a71d5d;">with </span><span style="color:#62a35c;">open</span><span style="color:#323232;">(outfile, </span><span style="color:#183691;">"wt"</span><span style="color:#323232;">) </span><span style="font-weight:bold;color:#a71d5d;">as </span><span style="color:#323232;">fout:
</span><span style="color:#323232;">            </span><span style="font-weight:bold;color:#a71d5d;">for </span><span style="color:#323232;">line </span><span style="font-weight:bold;color:#a71d5d;">in </span><span style="color:#323232;">fin:
</span><span style="color:#323232;">                fout.write(line.replace(</span><span style="color:#183691;">"/usr/bin/meson"</span><span style="color:#323232;">, </span><span style="color:#62a35c;">exec</span><span style="color:#323232;">))
</span><span style="color:#323232;">    subprocess.run([</span><span style="color:#183691;">"chmod"</span><span style="color:#323232;">, </span><span style="color:#183691;">"+x"</span><span style="color:#323232;">, outfile])
</span><span style="color:#323232;">
</span><span style="font-style:italic;color:#969896;"># GDB for debugging
</span><span style="color:#323232;">gen_script(</span><span style="color:#183691;">".flatpak/gdb.sh"</span><span style="color:#323232;">, </span><span style="color:#183691;">"/usr/bin/gdb"</span><span style="color:#323232;">)
</span><span style="font-style:italic;color:#969896;"># clangd for suggestions
</span><span style="color:#323232;">gen_script(</span><span style="color:#183691;">".flatpak/clangd.sh"</span><span style="color:#323232;">, </span><span style="color:#183691;">"/usr/lib/sdk/llvm18/bin/clangd"</span><span style="color:#323232;">)
</span>

Arality , 3 days ago

I’m not sure I understand what you’re asking. It seems like you’re asking why your clangd extension isn’t working? But then you say:

BTW I’m not talking about using clangd with the vscode flatpak package

unionagainstdhmo OP , 2 days ago

I was asking about getting the clangd extension to work when developing an application against the freedesktop sdk as a flatpak. I’ve worked it out now, thanks for your interest

DieserTypMatthias , 3 days ago

Just make a build script and then write a flatpak build file that’ll package it as a flatpak. Here’s an example.

unionagainstdhmo OP , 3 days ago

Not sure I follow. I’m talking about using the clangd language server to give me code completion, etc. when developing a flatpak application. I’ve already got it making the package and running it through the vscode debugger

DieserTypMatthias , 3 days ago

There’s an extension for that.