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ql-setup.lisp
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ql-setup.lisp
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;; Copyright (c) 2014 Zachary Beane <zach@quicklisp.org>
;; Permission is hereby granted, free of charge, to any person obtaining a copy
;; of this software and associated documentation files (the "Software"), to deal
;; in the Software without restriction, including without limitation the rights
;; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
;; copies of the Software, and to permit persons to whom the Software is
;; furnished to do so, subject to the following conditions:
;; The above copyright notice and this permission notice shall be included in
;; all copies or substantial portions of the Software.
;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
;; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
;; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
;; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
;; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
;; THE SOFTWARE.
;;; Commentary:
;;
;; Copied to get rid the `(qicklisp:setup)' call.
;; Whenever the client is updated the setup.lisp is replaced
;; and contains the call to setup.
(defpackage #:ql-setup
(:use #:cl)
(:export #:*quicklisp-home*
#:qmerge
#:qenough))
(in-package #:ql-setup)
(unless *load-truename*
(error "This file must be LOADed to set up quicklisp."))
(defvar *quicklisp-home*
(make-pathname :name nil :type nil
:defaults (let ((qlhome "~/quicklisp/"))
(if (probe-file qlhome)
qlhome
(error "Quicklisp not installed to
default location. Please set
*quicklisp-home* manually and
retry")))))
(defun qmerge (pathname)
"Return PATHNAME merged with the base Quicklisp directory."
(merge-pathnames pathname *quicklisp-home*))
(defun qenough (pathname)
(enough-namestring pathname *quicklisp-home*))
;;; ASDF is a hard requirement of quicklisp. Make sure it's either
;;; already loaded or load it from quicklisp's bundled version.
(defvar *required-asdf-version* "3.0")
;;; Put ASDF's fasls in a separate directory
(defun implementation-signature ()
"Return a string suitable for discriminating different
implementations, or similar implementations with possibly-incompatible
FASLs."
;; XXX Will this have problems with stuff like threads vs
;; non-threads fasls?
(let ((*print-pretty* nil))
(format nil "lisp-implementation-type: ~A~%~
lisp-implementation-version: ~A~%~
machine-type: ~A~%~
machine-version: ~A~%"
(lisp-implementation-type)
(lisp-implementation-version)
(machine-type)
(machine-version))))
(defun dumb-string-hash (string)
"Produce a six-character hash of STRING."
(let ((hash #xD13CCD13))
(loop for char across string
for value = (char-code char)
do
(setf hash (logand #xFFFFFFFF
(logxor (ash hash 5)
(ash hash -27)
value))))
(subseq (format nil "~(~36,6,'0R~)" (mod hash 88888901))
0 6)))
(defun asdf-fasl-pathname ()
"Return a pathname suitable for storing the ASDF FASL, separated
from ASDF FASLs from incompatible implementations. Also, save a file
in the directory with the implementation signature, if it doesn't
already exist."
(let* ((implementation-signature (implementation-signature))
(original-fasl (compile-file-pathname (qmerge "asdf.lisp")))
(fasl
(qmerge (make-pathname
:defaults original-fasl
:directory
(list :relative
"cache"
"asdf-fasls"
(dumb-string-hash implementation-signature)))))
(signature-file (merge-pathnames "signature.txt" fasl)))
(ensure-directories-exist fasl)
(unless (probe-file signature-file)
(with-open-file (stream signature-file :direction :output)
(write-string implementation-signature stream)))
fasl))
(defun ensure-asdf-loaded ()
"Try several methods to make sure that a sufficiently-new ASDF is
loaded: first try (require \"asdf\"), then loading the ASDF FASL, then
compiling asdf.lisp to a FASL and then loading it."
(let ((source (qmerge "asdf.lisp")))
(labels ((asdf-symbol (name)
(let ((asdf-package (find-package '#:asdf)))
(when asdf-package
(find-symbol (string name) asdf-package))))
(version-satisfies (version)
(let ((vs-fun (asdf-symbol '#:version-satisfies))
(vfun (asdf-symbol '#:asdf-version)))
(when (and vs-fun vfun
(fboundp vs-fun)
(fboundp vfun))
(funcall vs-fun (funcall vfun) version)))))
(block nil
(macrolet ((try (&body asdf-loading-forms)
`(progn
(handler-bind ((warning #'muffle-warning))
(ignore-errors
,@asdf-loading-forms))
(when (version-satisfies *required-asdf-version*)
(return t)))))
(try)
(try (require "asdf"))
(let ((fasl (asdf-fasl-pathname)))
(try (load fasl :verbose nil))
(try (load (compile-file source :verbose nil :output-file fasl))))
(error "Could not load ASDF ~S or newer" *required-asdf-version*))))))
(ensure-asdf-loaded)
;;;
;;; Quicklisp sometimes must upgrade ASDF. Ugrading ASDF will blow
;;; away existing ASDF methods, so e.g. FASL recompilation :around
;;; methods would be lost. This config file will make it possible to
;;; ensure ASDF can be configured before loading Quicklisp itself via
;;; ASDF. Thanks to Nikodemus Siivola for pointing out this issue.
;;;
(let ((asdf-init (probe-file (qmerge "asdf-config/init.lisp"))))
(when asdf-init
(with-simple-restart (skip "Skip loading ~S" asdf-init)
(load asdf-init :verbose nil :print nil))))
(push (qmerge "quicklisp/") asdf:*central-registry*)
(let ((*compile-print* nil)
(*compile-verbose* nil)
(*load-verbose* nil)
(*load-print* nil))
(asdf:oos 'asdf:load-op "quicklisp" :verbose nil))