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feat: add dap support for python

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Ching Pei Yang 2023-05-20 12:29:55 +02:00
parent b029426d34
commit b3b6f56fbc
1 changed files with 91 additions and 0 deletions
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91
modules/languages/python.nix
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@ -36,6 +36,69 @@ with builtins; let
'';
};
};
defaultDebugger = "debugpy";
debuggers = {
debugpy = {
# idk if this is the best way to install/run debugpy
package = pkgs.python3.withPackages (ps: with ps; [debugpy]);
dapConfig = ''
dap.adapters.python = function(cb, config)
if config.request == 'attach' then
---@diagnostic disable-next-line: undefined-field
local port = (config.connect or config).port
---@diagnostic disable-next-line: undefined-field
local host = (config.connect or config).host or '127.0.0.1'
cb({
type = 'server',
port = assert(port, '`connect.port` is required for a python `attach` configuration'),
host = host,
options = {
source_filetype = 'python',
},
})
else
cb({
type = 'executable',
command = '${getExe cfg.dap.package}',
args = { '-m', 'debugpy.adapter' },
options = {
source_filetype = 'python',
},
})
end
end
dap.configurations.python = {
{
-- The first three options are required by nvim-dap
type = 'python'; -- the type here established the link to the adapter definition: `dap.adapters.python`
request = 'launch';
name = "Launch file";
-- Options below are for debugpy, see https://github.com/microsoft/debugpy/wiki/Debug-configuration-settings for supported options
program = "''${file}"; -- This configuration will launch the current file if used.
pythonPath = function()
-- debugpy supports launching an application with a different interpreter then the one used to launch debugpy itself.
-- The code below looks for a `venv` or `.venv` folder in the current directly and uses the python within.
-- You could adapt this - to for example use the `VIRTUAL_ENV` environment variable.
local cwd = vim.fn.getcwd()
if vim.fn.executable(cwd .. '/venv/bin/python') == 1 then
return cwd .. '/venv/bin/python'
elseif vim.fn.executable(cwd .. '/.venv/bin/python') == 1 then
return cwd .. '/.venv/bin/python'
elseif vim.fn.executable("python") == 1 then
return vim.fn.exepath("python")
else -- WARNING cfg.dap.package probably has NO libraries other than builtins and debugpy
return '${getExe cfg.dap.package}'
end
end;
},
}
'';
};
};
in {
options.vim.languages.python = {
enable = mkEnableOption "Python language support";
@ -80,6 +143,29 @@ in {
default = formats.${cfg.format.type}.package;
};
};
# TODO this implementation is very bare bones, I don't know enough python to implement everything
dap = {
enable = mkOption {
description = "Enable Python Debug Adapter";
type = types.bool;
default = config.vim.languages.enableDAP;
};
debugger = mkOption {
description = "Python debugger to use";
type = with types; enum (attrNames debuggers);
default = defaultDebugger;
};
package = mkOption {
description = ''
Python debugger package.
This is a python package with debugpy installed, see https://nixos.wiki/wiki/Python#Install_Python_Packages.
'';
example = literalExpression "with pkgs; python39.withPackages (ps: with ps; [debugpy])";
type = types.package;
default = debuggers.${cfg.dap.debugger}.package;
};
};
};
config = mkIf cfg.enable (mkMerge [
(mkIf cfg.treesitter.enable {
@ -96,5 +182,10 @@ in {
vim.lsp.null-ls.enable = true;
vim.lsp.null-ls.sources.python-format = formats.${cfg.format.type}.nullConfig;
})
(mkIf cfg.dap.enable {
vim.debugger.nvim-dap.enable = true;
vim.debugger.nvim-dap.sources.python-debugger = debuggers.${cfg.dap.debugger}.dapConfig;
})
]);
}