233e76769a
Change all license headers, except guix/build/* and ld-wrapper.scm, with
this code:
(use-modules (guix build utils)
(srfi srfi-1))
(fluid-set! %default-port-encoding "UTF-8")
(substitute* (remove (lambda (f)
(or (string-contains f ".tar.")
(string-contains f ".git/")
(string-contains f ".so")
(string-suffix? ".o" f)
(string-suffix? ".a" f)
(string-suffix? ".go" f)
(string-suffix? ".pdf" f)
(string-suffix? ".png" f)
(string-suffix? ".info" f)
(equal? (basename f) "guix-daemon")
(equal? (basename f) "nix-setuid-helper")
(string-contains f "nix-upstream/")
(string-contains f "distro/packages/bootstrap/")))
(find-files "." "\\.[a-z]+$"))
(("^([[:graph:]]+) This file is part of Guix." _ comment-start)
(string-append comment-start " This file is part of GNU Guix."))
(("^([[:graph:]]+) Guix --- Nix package management.*" _ comment-start)
(string-append comment-start
" GNU Guix --- Functional package management for GNU\n"))
(("^([[:graph:]]+) Guix is " _ comment-start)
(string-append comment-start " GNU Guix is "))
(("^([[:graph:]]+) along with Guix." _ comment-start)
(string-append comment-start " along with GNU Guix."))
(("^([[:graph:]]+) Copyright \\(C\\)" _ comment-start)
(string-append comment-start " Copyright ©")))
Change headers using C-style comments manually.
406 lines
15 KiB
Scheme
406 lines
15 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2012 Ludovic Courtès <ludo@gnu.org>
|
||
;;;
|
||
;;; This file is part of GNU Guix.
|
||
;;;
|
||
;;; GNU Guix is free software; you can redistribute it and/or modify it
|
||
;;; under the terms of the GNU General Public License as published by
|
||
;;; the Free Software Foundation; either version 3 of the License, or (at
|
||
;;; your option) any later version.
|
||
;;;
|
||
;;; GNU Guix is distributed in the hope that it will be useful, but
|
||
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;; GNU General Public License for more details.
|
||
;;;
|
||
;;; You should have received a copy of the GNU General Public License
|
||
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (guix utils)
|
||
#:use-module (guix config)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-9)
|
||
#:use-module (srfi srfi-26)
|
||
#:use-module (srfi srfi-39)
|
||
#:use-module (srfi srfi-60)
|
||
#:use-module (rnrs bytevectors)
|
||
#:use-module ((rnrs io ports) #:select (put-bytevector))
|
||
#:use-module (ice-9 vlist)
|
||
#:use-module (ice-9 format)
|
||
#:autoload (ice-9 popen) (open-pipe*)
|
||
#:autoload (ice-9 rdelim) (read-line)
|
||
#:use-module (ice-9 regex)
|
||
#:use-module (ice-9 match)
|
||
#:use-module (ice-9 format)
|
||
#:autoload (system foreign) (pointer->procedure)
|
||
#:export (bytevector->base16-string
|
||
base16-string->bytevector
|
||
sha256
|
||
|
||
%nixpkgs-directory
|
||
nixpkgs-derivation
|
||
nixpkgs-derivation*
|
||
|
||
define-record-type*
|
||
compile-time-value
|
||
memoize
|
||
default-keyword-arguments
|
||
substitute-keyword-arguments
|
||
|
||
<location>
|
||
location
|
||
location?
|
||
location-file
|
||
location-line
|
||
location-column
|
||
source-properties->location
|
||
|
||
gnu-triplet->nix-system
|
||
%current-system
|
||
package-name->name+version))
|
||
|
||
|
||
;;;
|
||
;;; Compile-time computations.
|
||
;;;
|
||
|
||
(define-syntax compile-time-value
|
||
(syntax-rules ()
|
||
"Evaluate the given expression at compile time. The expression must
|
||
evaluate to a simple datum."
|
||
((_ exp)
|
||
(let-syntax ((v (lambda (s)
|
||
(let ((val exp))
|
||
(syntax-case s ()
|
||
(_ #`'#,(datum->syntax s val)))))))
|
||
v))))
|
||
|
||
|
||
;;;
|
||
;;; Base 16.
|
||
;;;
|
||
|
||
(define (bytevector->base16-string bv)
|
||
"Return the hexadecimal representation of BV's contents."
|
||
(define len
|
||
(bytevector-length bv))
|
||
|
||
(let-syntax ((base16-chars (lambda (s)
|
||
(syntax-case s ()
|
||
(_
|
||
(let ((v (list->vector
|
||
(unfold (cut > <> 255)
|
||
(lambda (n)
|
||
(format #f "~2,'0x" n))
|
||
1+
|
||
0))))
|
||
v))))))
|
||
(define chars base16-chars)
|
||
(let loop ((i 0)
|
||
(r '()))
|
||
(if (= i len)
|
||
(string-concatenate-reverse r)
|
||
(loop (+ 1 i)
|
||
(cons (vector-ref chars (bytevector-u8-ref bv i)) r))))))
|
||
|
||
(define base16-string->bytevector
|
||
(let ((chars->value (fold (lambda (i r)
|
||
(vhash-consv (string-ref (number->string i 16)
|
||
0)
|
||
i r))
|
||
vlist-null
|
||
(iota 16))))
|
||
(lambda (s)
|
||
"Return the bytevector whose hexadecimal representation is string S."
|
||
(define bv
|
||
(make-bytevector (quotient (string-length s) 2) 0))
|
||
|
||
(string-fold (lambda (chr i)
|
||
(let ((j (quotient i 2))
|
||
(v (and=> (vhash-assv chr chars->value) cdr)))
|
||
(if v
|
||
(if (zero? (logand i 1))
|
||
(bytevector-u8-set! bv j
|
||
(arithmetic-shift v 4))
|
||
(let ((w (bytevector-u8-ref bv j)))
|
||
(bytevector-u8-set! bv j (logior v w))))
|
||
(error "invalid hexadecimal character" chr)))
|
||
(+ i 1))
|
||
0
|
||
s)
|
||
bv)))
|
||
|
||
|
||
;;;
|
||
;;; Hash.
|
||
;;;
|
||
|
||
(define sha256
|
||
(let ((hash (pointer->procedure void
|
||
(dynamic-func "gcry_md_hash_buffer"
|
||
(dynamic-link %libgcrypt))
|
||
`(,int * * ,size_t)))
|
||
(sha256 8)) ; GCRY_MD_SHA256, as of 1.5.0
|
||
(lambda (bv)
|
||
"Return the SHA256 of BV as a bytevector."
|
||
(let ((digest (make-bytevector (/ 256 8))))
|
||
(hash sha256 (bytevector->pointer digest)
|
||
(bytevector->pointer bv) (bytevector-length bv))
|
||
digest))))
|
||
|
||
|
||
;;;
|
||
;;; Nixpkgs.
|
||
;;;
|
||
|
||
(define %nixpkgs-directory
|
||
(make-parameter
|
||
;; Capture the build-time value of $NIXPKGS.
|
||
(or %nixpkgs
|
||
(and=> (getenv "NIXPKGS")
|
||
(lambda (val)
|
||
;; Bail out when passed an empty string, otherwise
|
||
;; `nix-instantiate' will sit there and attempt to read
|
||
;; from its standard input.
|
||
(if (string=? val "")
|
||
#f
|
||
val))))))
|
||
|
||
(define* (nixpkgs-derivation attribute #:optional (system (%current-system)))
|
||
"Return the derivation path of ATTRIBUTE in Nixpkgs."
|
||
(let* ((p (open-pipe* OPEN_READ (or (getenv "NIX_INSTANTIATE")
|
||
%nix-instantiate)
|
||
"-A" attribute (%nixpkgs-directory)
|
||
"--argstr" "system" system))
|
||
(l (read-line p))
|
||
(s (close-pipe p)))
|
||
(and (zero? (status:exit-val s))
|
||
(not (eof-object? l))
|
||
l)))
|
||
|
||
(define-syntax-rule (nixpkgs-derivation* attribute)
|
||
"Evaluate the given Nixpkgs derivation at compile-time."
|
||
(compile-time-value (nixpkgs-derivation attribute)))
|
||
|
||
|
||
;;;
|
||
;;; Miscellaneous.
|
||
;;;
|
||
|
||
(define-syntax define-record-type*
|
||
(lambda (s)
|
||
"Define the given record type such that an additional \"syntactic
|
||
constructor\" is defined, which allows instances to be constructed with named
|
||
field initializers, à la SRFI-35, as well as default values."
|
||
(define (make-syntactic-constructor type name ctor fields defaults)
|
||
"Make the syntactic constructor NAME for TYPE, that calls CTOR, and
|
||
expects all of FIELDS to be initialized. DEFAULTS is the list of
|
||
FIELD/DEFAULT-VALUE tuples."
|
||
(with-syntax ((type type)
|
||
(name name)
|
||
(ctor ctor)
|
||
(expected fields)
|
||
(defaults defaults))
|
||
#`(define-syntax name
|
||
(lambda (s)
|
||
(define (record-inheritance orig-record field+value)
|
||
;; Produce code that returns a record identical to
|
||
;; ORIG-RECORD, except that values for the FIELD+VALUE alist
|
||
;; prevail.
|
||
(define (field-inherited-value f)
|
||
(and=> (find (lambda (x)
|
||
(eq? f (car (syntax->datum x))))
|
||
field+value)
|
||
car))
|
||
|
||
#`(make-struct type 0
|
||
#,@(map (lambda (field index)
|
||
(or (field-inherited-value field)
|
||
#`(struct-ref #,orig-record
|
||
#,index)))
|
||
'expected
|
||
(iota (length 'expected)))))
|
||
|
||
|
||
(syntax-case s (inherit #,@fields)
|
||
((_ (inherit orig-record) (field value) (... ...))
|
||
#`(letrec* ((field value) (... ...))
|
||
#,(record-inheritance #'orig-record
|
||
#'((field value) (... ...)))))
|
||
((_ (field value) (... ...))
|
||
(let ((fields (map syntax->datum #'(field (... ...))))
|
||
(dflt (map (match-lambda
|
||
((f v)
|
||
(list (syntax->datum f) v)))
|
||
#'defaults)))
|
||
|
||
(define (field-value f)
|
||
(or (and=> (find (lambda (x)
|
||
(eq? f (car (syntax->datum x))))
|
||
#'((field value) (... ...)))
|
||
car)
|
||
(car (assoc-ref dflt (syntax->datum f)))))
|
||
|
||
(let-syntax ((error*
|
||
(syntax-rules ()
|
||
((_ fmt args (... ...))
|
||
(syntax-violation 'name
|
||
(format #f fmt args
|
||
(... ...))
|
||
s)))))
|
||
(let ((fields (append fields (map car dflt))))
|
||
(cond ((lset= eq? fields 'expected)
|
||
#`(letrec* ((field value) (... ...))
|
||
(ctor #,@(map field-value 'expected))))
|
||
((pair? (lset-difference eq? fields 'expected))
|
||
(error* "extraneous field initializers ~a"
|
||
(lset-difference eq? fields 'expected)))
|
||
(else
|
||
(error* "missing field initializers ~a"
|
||
(lset-difference eq? 'expected
|
||
fields)))))))))))))
|
||
|
||
(define (field-default-value s)
|
||
(syntax-case s (default)
|
||
((field (default val) _ ...)
|
||
(list #'field #'val))
|
||
((field _ options ...)
|
||
(field-default-value #'(field options ...)))
|
||
(_ #f)))
|
||
|
||
(syntax-case s ()
|
||
((_ type syntactic-ctor ctor pred
|
||
(field get options ...) ...)
|
||
#`(begin
|
||
(define-record-type type
|
||
(ctor field ...)
|
||
pred
|
||
(field get) ...)
|
||
#,(make-syntactic-constructor #'type #'syntactic-ctor #'ctor
|
||
#'(field ...)
|
||
(filter-map field-default-value
|
||
#'((field options ...)
|
||
...))))))))
|
||
|
||
(define (memoize proc)
|
||
"Return a memoizing version of PROC."
|
||
(let ((cache (make-hash-table)))
|
||
(lambda args
|
||
(let ((results (hash-ref cache args)))
|
||
(if results
|
||
(apply values results)
|
||
(let ((results (call-with-values (lambda ()
|
||
(apply proc args))
|
||
list)))
|
||
(hash-set! cache args results)
|
||
(apply values results)))))))
|
||
|
||
(define (default-keyword-arguments args defaults)
|
||
"Return ARGS augmented with any keyword/value from DEFAULTS for
|
||
keywords not already present in ARGS."
|
||
(let loop ((defaults defaults)
|
||
(args args))
|
||
(match defaults
|
||
((kw value rest ...)
|
||
(loop rest
|
||
(if (assoc-ref kw args)
|
||
args
|
||
(cons* kw value args))))
|
||
(()
|
||
args))))
|
||
|
||
(define-syntax substitute-keyword-arguments
|
||
(syntax-rules ()
|
||
"Return a new list of arguments where the value for keyword arg KW is
|
||
replaced by EXP. EXP is evaluated in a context where VAR is boud to the
|
||
previous value of the keyword argument."
|
||
((_ original-args ((kw var) exp) ...)
|
||
(let loop ((args original-args)
|
||
(before '()))
|
||
(match args
|
||
((kw var rest (... ...))
|
||
(loop rest (cons* exp kw before)))
|
||
...
|
||
((x rest (... ...))
|
||
(loop rest (cons x before)))
|
||
(()
|
||
(reverse before)))))))
|
||
|
||
(define (gnu-triplet->nix-system triplet)
|
||
"Return the Nix system type corresponding to TRIPLET, a GNU triplet as
|
||
returned by `config.guess'."
|
||
(let ((triplet (cond ((string-match "^i[345]86-(.*)$" triplet)
|
||
=>
|
||
(lambda (m)
|
||
(string-append "i686-" (match:substring m 1))))
|
||
(else triplet))))
|
||
(cond ((string-match "^([^-]+)-([^-]+-)?linux-gnu.*" triplet)
|
||
=>
|
||
(lambda (m)
|
||
;; Nix omits `-gnu' for GNU/Linux.
|
||
(string-append (match:substring m 1) "-linux")))
|
||
((string-match "^([^-]+)-([^-]+-)?([[:alpha:]]+)([0-9]+\\.?)*$" triplet)
|
||
=>
|
||
(lambda (m)
|
||
;; Nix strip the version number from names such as `gnu0.3',
|
||
;; `darwin10.2.0', etc., and always strips the vendor part.
|
||
(string-append (match:substring m 1) "-"
|
||
(match:substring m 3))))
|
||
(else triplet))))
|
||
|
||
(define %current-system
|
||
;; System type as expected by Nix, usually ARCHITECTURE-KERNEL.
|
||
;; By default, this is equal to (gnu-triplet->nix-system %host-type).
|
||
(make-parameter %system))
|
||
|
||
(define (package-name->name+version name)
|
||
"Given NAME, a package name like \"foo-0.9.1b\", return two values:
|
||
\"foo\" and \"0.9.1b\". When the version part is unavailable, NAME and
|
||
#f are returned. The first hyphen followed by a digit is considered to
|
||
introduce the version part."
|
||
;; See also `DrvName' in Nix.
|
||
|
||
(define number?
|
||
(cut char-set-contains? char-set:digit <>))
|
||
|
||
(let loop ((chars (string->list name))
|
||
(prefix '()))
|
||
(match chars
|
||
(()
|
||
(values name #f))
|
||
((#\- (? number? n) rest ...)
|
||
(values (list->string (reverse prefix))
|
||
(list->string (cons n rest))))
|
||
((head tail ...)
|
||
(loop tail (cons head prefix))))))
|
||
|
||
|
||
;;;
|
||
;;; Source location.
|
||
;;;
|
||
|
||
;; A source location.
|
||
(define-record-type <location>
|
||
(make-location file line column)
|
||
location?
|
||
(file location-file) ; file name
|
||
(line location-line) ; 1-indexed line
|
||
(column location-column)) ; 0-indexed column
|
||
|
||
(define location
|
||
(memoize
|
||
(lambda (file line column)
|
||
"Return the <location> object for the given FILE, LINE, and COLUMN."
|
||
(and line column file
|
||
(make-location file line column)))))
|
||
|
||
(define (source-properties->location loc)
|
||
"Return a location object based on the info in LOC, an alist as returned
|
||
by Guile's `source-properties', `frame-source', `current-source-location',
|
||
etc."
|
||
(let ((file (assq-ref loc 'filename))
|
||
(line (assq-ref loc 'line))
|
||
(col (assq-ref loc 'column)))
|
||
;; In accordance with the GCS, start line and column numbers at 1.
|
||
(location file (and line (+ line 1)) (and col (+ col 1)))))
|