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feat(functions): Add functions to insert nix-store paths

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These can be useful - for example - while debugging nix things in eshell.
This commit is contained in:
Vincent Ambo 2017-11-12 19:00:49 +01:00
parent ac5b34e131
commit 5fcabc204a
1 changed files with 11 additions and 0 deletions
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11
init/functions.el
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@ -116,4 +116,15 @@ Including indent-buffer, which should not be called automatically on save."
(interactive)
(find-file "/etc/nixos/configuration.nix"))
;; Get the nix store path for a given derivation.
;; If the derivation has not been built before, this will trigger a build.
(defun nix-store-path (derivation)
(let ((expr (concat "with import <nixos> {}; " derivation)))
(s-chomp (shell-command-to-string (concat "nix-build -E '" expr "'")))))
(defun insert-nix-store-path ()
(interactive)
(let ((derivation (read-string "Derivation name (in <nixos>): ")))
(insert-string (nix-store-path derivation))))
(provide 'functions)