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)
  (let* ((default-directory (package-recipe--working-tree rcp)))
    (unwind-protect
        (let ((files (package-build-expand-files-spec rcp t)))
          (unless files
            (error "Unable to find files matching recipe patterns"))
          (if (> (length files) 1)
              (package-build--build-multi-file-package rcp files)
            (package-build--build-single-file-package rcp files))))))

(defun melpa2nix-build-package ()
  (unless noninteractive
    (error "`melpa2nix-build-package' is to be used only with -batch"))
  (pcase command-line-args-left
    (`(,package ,version ,commit)
     (let ((recipe (package-recipe-lookup package)))
       (setf (oref recipe commit) commit)
       (setf (oref recipe version) version)
       (melpa2nix-build-package-1 recipe)))))
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)`

ReApply PR #276943: "melpa2nix: update to work with Emacs HEAD" This reverts commit 7b623c33889c208cda0997b4929217907310eb1b (PR #277535), reversing changes made to 0aa7301173defecab229898e02afe864c7ac8cf6. 2023-12-29 14:00:46 +01:00			`(defun melpa2nix-build-package-1 (rcp)`
			`(let* ((default-directory (package-recipe--working-tree rcp)))`
emacsPackages.melpaBuild: Update package-build, avoid monkey-patch 2022-05-23 21:52:17 +02:00			`(unwind-protect`
			`(let ((files (package-build-expand-files-spec rcp t)))`
ReApply PR #276943: "melpa2nix: update to work with Emacs HEAD" This reverts commit 7b623c33889c208cda0997b4929217907310eb1b (PR #277535), reversing changes made to 0aa7301173defecab229898e02afe864c7ac8cf6. 2023-12-29 14:00:46 +01:00			`(unless files`
			`(error "Unable to find files matching recipe patterns"))`
			`(if (> (length files) 1)`
			`(package-build--build-multi-file-package rcp files)`
			`(package-build--build-single-file-package rcp files))))))`
emacsPackages.melpaBuild: Update package-build, avoid monkey-patch 2022-05-23 21:52:17 +02:00
add package.el-based emacs package builder 2015-02-09 01:29:48 +01:00			`(defun melpa2nix-build-package ()`
ReApply PR #276943: "melpa2nix: update to work with Emacs HEAD" This reverts commit 7b623c33889c208cda0997b4929217907310eb1b (PR #277535), reversing changes made to 0aa7301173defecab229898e02afe864c7ac8cf6. 2023-12-29 14:00:46 +01:00			`(unless noninteractive`
			(error "`melpa2nix-build-package' is to be used only with -batch"))
add package.el-based emacs package builder 2015-02-09 01:29:48 +01:00			`(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)
ReApply PR #276943: "melpa2nix: update to work with Emacs HEAD" This reverts commit 7b623c33889c208cda0997b4929217907310eb1b (PR #277535), reversing changes made to 0aa7301173defecab229898e02afe864c7ac8cf6. 2023-12-29 14:00:46 +01:00			`(let ((recipe (package-recipe-lookup package)))`
			`(setf (oref recipe commit) commit)`
			`(setf (oref recipe version) version)`
			`(melpa2nix-build-package-1 recipe)))))`