tools: Fix isort

- Isort's has patches containing absolute paths that don't apply.
- Let isort apply the patch itself.
- The patch_command can either do the patch or return a patch.

eris/__main__.py

@@ -794,7 +794,7 @@ class Screen:
             path_colored = lscolors.path_colored(path)
             self._log.log_message([in_green("Patching file: "), path_colored])
             subprocess.run(f"{result.tool.patch_command} {path} | patch -p0", shell=True,
-                           stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+                           capture_output=True)
             subprocess.run(["touch", path])
 
     def toggle_status_style(self):

eris/tools.toml

@@ -103,7 +103,7 @@ tools_for_extensions = [
   dependencies = ["python3-isort", "python3-colorama"]
   url = "https://pycqa.github.io/isort/"
   command = "/usr/bin/python3 -m isort --check-only --diff --color"
-  patch_command = "/usr/bin/python3 -m isort --diff"
+  patch_command = "/usr/bin/python3 -m isort --overwrite-in-place"
   has_color = true
 
 [perl_syntax]