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33 lines
1.1 KiB
33 lines
1.1 KiB
(require 'package)
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(package-initialize)
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(defun elpa2nix-install-package ()
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(if (not noninteractive)
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(error "`elpa2nix-install-package' is to be used only with -batch"))
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(pcase command-line-args-left
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(`(,archive ,elpa)
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(progn (setq package-user-dir elpa)
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(elpa2nix-install-file archive)))))
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(defun elpa2nix-install-from-buffer ()
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"Install a package from the current buffer."
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(let ((pkg-desc (if (derived-mode-p 'tar-mode)
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(package-tar-file-info)
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(package-buffer-info))))
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;; Install the package itself.
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(package-unpack pkg-desc)
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pkg-desc))
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(defun elpa2nix-install-file (file)
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"Install a package from a file.
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The file can either be a tar file or an Emacs Lisp file."
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(let ((is-tar (string-match "\\.tar\\'" file)))
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(with-temp-buffer
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(if is-tar
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(insert-file-contents-literally file)
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(insert-file-contents file))
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(when is-tar (tar-mode))
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(elpa2nix-install-from-buffer))))
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;; Allow installing package tarfiles larger than 10MB
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(setq large-file-warning-threshold nil)
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