dir-locals.el: Do not overwrite default-directory but use eval directly

Author: JanLuca

.dir-locals.el

@@ -1,10 +1,22 @@
-((nil . ((eval . (setq default-directory
-                       (locate-dominating-file default-directory
-                                               ".dir-locals.el")))))
- (python-mode
-  (flycheck-python-flake8-executable . "venv/bin/python")
-  (flycheck-python-pylint-executable . "venv/bin/pylint")
-  (flycheck-python-mypy-executable . "venv/bin/mypy")
-  (flycheck-python-pycompile-executable . "venv/bin/python"))
+((python-mode
+  (eval . (setq flycheck-python-flake8-executable
+                (expand-file-name "venv/bin/python" (locate-dominating-file
+                                                     default-directory
+                                                     ".dir-locals.el"))))
+  (eval . (setq flycheck-python-pylint-executable
+                (expand-file-name "venv/bin/python" (locate-dominating-file
+                                                     default-directory
+                                                     ".dir-locals.el"))))
+  (eval . (setq flycheck-python-mypy-executable
+                (expand-file-name "venv/bin/mypy" (locate-dominating-file
+                                                   default-directory
+                                                   ".dir-locals.el"))))
+  (eval . (setq flycheck-python-pycompile-executable
+                (expand-file-name "venv/bin/python" (locate-dominating-file
+                                                     default-directory
+                                                     ".dir-locals.el")))))
  (rst-mode
-  (flycheck-rst-sphinx-executable . "venv/bin/sphinx-build")))
+  (eval . (setq flycheck-rst-sphinx-executable
+                (expand-file-name "venv/bin/sphinx-build" (locate-dominating-file
+                                                           default-directory
+                                                           ".dir-locals.el"))))))