Configure sheelcheck and flake8 with diagnostic-languageserver for Sublime LSP

LSP.sublime-settings.jsonc

{
	"clients": {
		"diagnostic-ls": {
			"enabled": true,
			"command": [
				"diagnostic-languageserver",
				"--stdio"
			],
			"selector": "source.shell, source.python",
			"initializationOptions": {
				"linters": {
					"shellcheck": {
						"command": "shellcheck",
						"debounce": 100,
						"args": [
							"--format=json",
							"-"
						],
						"offsetLine": 0,
						"offsetColumn": 0,
						"sourceName": "shellcheck",
						"formatLines": 1,
						"parseJson": {
							"line": "line",
							"column": "column",
							"endLine": "endLine",
							"endColumn": "endColumn",
							"security": "level",
							"message": "\\${message} [\\${code}]",
						},
						"securities": {
							"error": "error",
							"warning": "warning",
							"note": "info",
						},
					},
					"flake8": {
						"command": "flake8",
						"debounce": 100,
						"args": [
							"--format",
							"%(row)d,%(col)d,%(code).1s,%(text)s [%(code)s]",
							"-"
						],
						"sourceName": "flake8",
						"formatLines": 1,
						"formatPattern": [
							"(\\d+),(\\d+),()([A-Z]),(.*)",
							{
								"line": 1,
								"column": 2,
								"security": 3, // Match a zero-length group so everything can be classified as a Warning rather than Error
								"message": 5,
							}
						],
						"securities": {
							"": "warning",
						},
					},
				},
				"formatters": {},
				"filetypes": {
					"shellscript": "shellcheck",
					"python": "flake8",
				},
			},
		},
	}
}