nixpkgs/pkgs/build-support/emacs/melpa2nix.el

(require 'package)
(package-initialize)

(require 'package-recipe)
(require 'package-build)

(setq package-build-working-dir (expand-file-name "working/"))
(setq package-build-archive-dir (expand-file-name "packages/"))
(setq package-build-recipes-dir (expand-file-name "recipes/"))

;; Allow installing package tarfiles larger than 10MB
(setq large-file-warning-threshold nil)

(defun melpa2nix-build-package-1 (rcp version commit)
  (let ((source-dir (package-recipe--working-tree rcp)))
    (unwind-protect
        (let ((files (package-build-expand-files-spec rcp t)))
          (cond
           ((= (length files) 1)
            (package-build--build-single-file-package
             rcp version commit files source-dir))
           ((> (length files) 1)
            (package-build--build-multi-file-package
             rcp version commit files source-dir))
           (t (error "Unable to find files matching recipe patterns")))))))

(defun melpa2nix-build-package ()
  (if (not noninteractive)
      (error "`melpa2nix-build-package' is to be used only with -batch"))
  (pcase command-line-args-left
    (`(,package ,version ,commit)
     (melpa2nix-build-package-1 (package-recipe-lookup package) version commit))))
add package.el-based emacs package builder 2015-02-09 01:29:48 +01:00			`(require 'package)`
			`(package-initialize)`

emacsPackagesNg: 2018-07-15 update All package sets are simultaneously updated to accommodate changes to package-build. Due to new restrictions in package-build, all packages using `melpaBuild` must now provide a recipe file, even those packages which are not included in upstream MELPA. 2018-07-16 03:52:41 +02:00			`(require 'package-recipe)`
add package.el-based emacs package builder 2015-02-09 01:29:48 +01:00			`(require 'package-build)`

emacsPackagesNg: 2018-07-15 update All package sets are simultaneously updated to accommodate changes to package-build. Due to new restrictions in package-build, all packages using `melpaBuild` must now provide a recipe file, even those packages which are not included in upstream MELPA. 2018-07-16 03:52:41 +02:00			`(setq package-build-working-dir (expand-file-name "working/"))`
			`(setq package-build-archive-dir (expand-file-name "packages/"))`
			`(setq package-build-recipes-dir (expand-file-name "recipes/"))`
add package.el-based emacs package builder 2015-02-09 01:29:48 +01:00
melpa2nix: Ignore large file warnings While we haven't encountered any problems related to this in MELPA it's just a matter of time (this just happened for an ELPA package (phps-mode)). 2021-12-19 17:07:18 +01:00			`;; Allow installing package tarfiles larger than 10MB`
			`(setq large-file-warning-threshold nil)`

emacsPackages.melpaBuild: Update package-build, avoid monkey-patch 2022-05-23 21:52:17 +02:00			`(defun melpa2nix-build-package-1 (rcp version commit)`
			`(let ((source-dir (package-recipe--working-tree rcp)))`
			`(unwind-protect`
			`(let ((files (package-build-expand-files-spec rcp t)))`
			`(cond`
			`((= (length files) 1)`
			`(package-build--build-single-file-package`
			`rcp version commit files source-dir))`
			`((> (length files) 1)`
			`(package-build--build-multi-file-package`
			`rcp version commit files source-dir))`
			`(t (error "Unable to find files matching recipe patterns")))))))`

add package.el-based emacs package builder 2015-02-09 01:29:48 +01:00			`(defun melpa2nix-build-package ()`
			`(if (not noninteractive)`
			(error "`melpa2nix-build-package' is to be used only with -batch"))
			`(pcase command-line-args-left`
emacs.pkgs.melpaBuild: package-build: 2018-10-05 -> 2021-04-13 I think this is due an update. I've chosen to update to the latest version that has been merged into Melpa. Unfortunately we now need to hack around it trying to run VCS commands. My Emacs configuration with thirty-something leaf packages seems fine after the rebuild. 2021-07-06 17:52:13 +02:00			(`(,package ,version ,commit)
emacsPackages.melpaBuild: Update package-build, avoid monkey-patch 2022-05-23 21:52:17 +02:00			`(melpa2nix-build-package-1 (package-recipe-lookup package) version commit))))`