fix loading order of nix-env-from-packages for haskell

1 files changed, 24 insertions, 22 deletions

diff --git a/emacs.org b/emacs.org
index 649b0e7..9d76288 100644
--- a/emacs.org
+++ b/emacs.org
@@ -373,32 +373,34 @@ Also, if you just stumbled accross this at random, there is an easy tangle butto
       I use nix-sandbox for managing nix package for other languages.
       One of the functions doesn't work that well for me so I replaced it with something that does
       #+begin_src emacs-lisp :tangle emacsconfig/nix.el
-	(use-package nix-sandbox
-	  :config
-	  (defun nix-executable-find (sandbox executable)
-	    "finds an EXECUTABLE in SANDBOX"
-	    (set (make-local-variable 'exec-path) (nix-exec-path sandbox))
-	    (executable-find executable)))
+        (use-package nix-sandbox
+          :demand
+          :config
+          (defun nix-executable-find (sandbox executable)
+            "finds an EXECUTABLE in SANDBOX"
+            (set (make-local-variable 'exec-path) (nix-exec-path sandbox))
+            (executable-find executable))
       #+end_src
       Beyond that, there is a helper function that makes it easy to quickly define environments with the required
       packages for a programming language
       #+begin_src emacs-lisp :tangle emacsconfig/nix.el
-	(defun nix-env-from-packages (name &rest packages)
-	  "create a nix environment from nix packages. returns the location of the environment"
-	  (interactive (append
-			(list (read-string "Environment name: " nil nil "nameless"))
-			(split-string (read-string "Packages: "))))
-	  (with-temp-buffer
-	    (insert (format "
-	{ pkgs ? import %s {}}:
-	pkgs.mkShell {
-	buildInputs = with pkgs;[
-	%s
-	];
-	}
-	    " (or nix-nixpkgs-path "<nixpkgs>") (apply 'concat (intersperse "\n" packages))))
-	    (write-file (concat temporary-file-directory name "-env/shell.nix"))
-	    (nix-find-sandbox (concat temporary-file-directory name "-env"))))
+        (defun intersperse (el ls) (if (cdr ls) `(,(car ls) ,el . ,(intersperse el (cdr ls))) ls))
+        (defun nix-env-from-packages (name &rest packages)
+          "create a nix environment from nix packages. returns the location of the environment"
+          (interactive (append
+                        (list (read-string "Environment name: " nil nil "nameless"))
+                        (split-string (read-string "Packages: "))))
+          (with-temp-buffer
+            (insert (format "
+                { pkgs ? import %s {}}:
+                pkgs.mkShell {
+                buildInputs = with pkgs;[
+                %s
+                ];
+                }
+                    " (or nix-nixpkgs-path "<nixpkgs>") (apply 'concat (intersperse "\n" packages))))
+            (write-file (concat temporary-file-directory name "-env/shell.nix"))
+            (nix-find-sandbox (concat temporary-file-directory name "-env")))))
       #+end_src
 **** Python
      Python is a bit weird. It had no intentions at all to do things the way I wanted it to do things with