mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-15 10:12:58 +00:00
84 lines
2.4 KiB
Common Lisp
84 lines
2.4 KiB
Common Lisp
(defpackage org.lispbuilds.nix/nix
|
|
(:documentation "Utilities for generating Nix code")
|
|
(:use :cl)
|
|
(:import-from :str)
|
|
(:import-from :ppcre)
|
|
(:import-from :arrow-macros :->>)
|
|
(:import-from :org.lispbuilds.nix/util :replace-regexes)
|
|
(:export
|
|
:nix-eval
|
|
:nixify-symbol
|
|
:system-master
|
|
:make-pname
|
|
:*nix-attrs-depth*))
|
|
|
|
(in-package org.lispbuilds.nix/nix)
|
|
|
|
;; Path names are alphanumeric and can include the symbols +-._?= and
|
|
;; must not begin with a period.
|
|
(defun make-pname (string)
|
|
(replace-regexes '("^[.]" "[^a-zA-Z0-9+-._?=]")
|
|
'("_" "_")
|
|
string))
|
|
|
|
(defun system-master (system)
|
|
(first (str:split "/" system)))
|
|
|
|
;;;; Nix generation
|
|
|
|
(defun nix-eval (exp)
|
|
(assert (consp exp))
|
|
(ecase (car exp)
|
|
(:string (nix-string (cadr exp)))
|
|
(:list (apply #'nix-list (rest exp)))
|
|
(:funcall (apply #'nix-funcall (rest exp)))
|
|
(:attrs (nix-attrs (cdr exp)))
|
|
(:merge (apply #'nix-merge (cdr exp)))
|
|
(:symbol (nix-symbol (cadr exp)))))
|
|
|
|
(defun nix-string (object)
|
|
(format nil "\"~a\"" object))
|
|
|
|
(defun nixify-symbol (string)
|
|
(flet ((fix-special-chars (str)
|
|
(replace-regexes '("[_]" "[+]$" "[+][/]" "[+]" "[.]" "[/]")
|
|
'("__" "_plus" "_plus/" "_plus_" "_dot_" "_slash_")
|
|
str)))
|
|
(if (ppcre:scan "^[0-9]" string)
|
|
(str:concat "_" (fix-special-chars string))
|
|
(fix-special-chars string))))
|
|
|
|
|
|
(defun nix-symbol (object)
|
|
(nixify-symbol (format nil "~a" object)))
|
|
|
|
(defun nix-list (&rest things)
|
|
(format nil "[ ~{~A~^ ~} ]" (mapcar 'nix-eval things)))
|
|
(defvar *nix-attrs-depth* 0)
|
|
|
|
(defun nix-attrs (keyvals)
|
|
(when (null keyvals)
|
|
(return-from nix-attrs "{}"))
|
|
(let ((*nix-attrs-depth* (1+ *nix-attrs-depth*)))
|
|
(format
|
|
nil
|
|
(->> "{~%*depth*~{~{~A = ~A;~}~^~%*depth*~}~%*depth-1*}"
|
|
(str:replace-all "*depth*" (str:repeat *nix-attrs-depth* " "))
|
|
(str:replace-all "*depth-1*" (str:repeat (1- *nix-attrs-depth*) " ")))
|
|
(mapcar (lambda (keyval)
|
|
(let ((key (car keyval))
|
|
(val (cadr keyval)))
|
|
(list (nix-symbol key)
|
|
(nix-eval val))))
|
|
keyvals))))
|
|
|
|
(defun nix-funcall (fun &rest args)
|
|
(format nil "(~a ~{~a~^ ~})"
|
|
(nixify-symbol fun)
|
|
(mapcar 'nix-eval args)))
|
|
|
|
(defun nix-merge (a b)
|
|
(format nil "(~a // ~b)"
|
|
(nix-eval a)
|
|
(nix-eval b)))
|