diff options
| -rw-r--r-- | guix/import/pypi.scm | 54 |
1 files changed, 31 insertions, 23 deletions
diff --git a/guix/import/pypi.scm b/guix/import/pypi.scm index 25560bac46..51c2d5264a 100644 --- a/guix/import/pypi.scm +++ b/guix/import/pypi.scm @@ -3,6 +3,7 @@ ;;; Copyright © 2015 Cyril Roelandt <tipecaml@gmail.com> ;;; Copyright © 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2017 Mathieu Othacehe <m.othacehe@gmail.com> +;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net> ;;; ;;; This file is part of GNU Guix. ;;; @@ -36,7 +37,8 @@ #:use-module (guix utils) #:use-module ((guix build utils) #:select ((package-name->name+version - . hyphen-package-name->name+version))) + . hyphen-package-name->name+version) + find-files)) #:use-module (guix import utils) #:use-module ((guix download) #:prefix download:) #:use-module (guix import json) @@ -114,9 +116,9 @@ package definition." `((propagated-inputs (,'quasiquote ,package-inputs)))))) (define (guess-requirements source-url wheel-url tarball) - "Given SOURCE-URL, WHEEL-URL and a TARBALL of the package, return a list of -the required packages specified in the requirements.txt file. TARBALL will be -extracted in the current directory, and will be deleted." + "Given SOURCE-URL, WHEEL-URL and a TARBALL of the package, return a list +of the required packages specified in the requirements.txt file. TARBALL will +be extracted in a temporary directory." (define (tarball-directory url) ;; Given the URL of the package's tarball, return the name of the directory @@ -140,8 +142,8 @@ cannot determine package dependencies")) ;; file, remove everything other than the actual name of the required ;; package, and return it. (string-take s - (or (string-index s #\space) - (string-length s)))) + (or (string-index s (lambda (chr) (member chr '(#\space #\> #\= #\<)))) + (string-length s)))) (define (comment? line) ;; Return #t if the given LINE is a comment, #f otherwise. @@ -197,31 +199,37 @@ cannot determine package dependencies")) (read-wheel-metadata temp)) #f)))) - (define (guess-requirements-from-source) ;; Return the package's requirements by guessing them from the source. (let ((dirname (tarball-directory source-url))) (if (string? dirname) - (let* ((req-file (string-append dirname "/requirements.txt")) - (exit-code (system* "tar" "xf" tarball req-file))) - ;; TODO: support more formats. - (if (zero? exit-code) - (dynamic-wind - (const #t) - (lambda () - (read-requirements req-file)) - (lambda () - (delete-file req-file) - (rmdir dirname))) - (begin - (warning (G_ "'tar xf' failed with exit code ~a\n") - exit-code) - '()))) + (call-with-temporary-directory + (lambda (dir) + (let* ((pypi-name (string-take dirname (string-rindex dirname #\-))) + (req-files (list (string-append dirname "/requirements.txt") + (string-append dirname "/" pypi-name ".egg-info" + "/requires.txt"))) + (exit-codes (map (lambda (file-name) + (parameterize ((current-error-port (%make-void-port "rw+")) + (current-output-port (%make-void-port "rw+"))) + (system* "tar" "xf" tarball "-C" dir file-name))) + req-files))) + ;; Only one of these files needs to exist. + (if (any zero? exit-codes) + (match (find-files dir) + ((file . _) + (read-requirements file)) + (() + (warning (G_ "No requirements file found.\n")))) + (begin + (warning (G_ "Failed to extract requirements files\n")) + '()))))) '()))) ;; First, try to compute the requirements using the wheel, since that is the ;; most reliable option. If a wheel is not provided for this package, try - ;; getting them by reading the "requirements.txt" file from the source. Note + ;; getting them by reading either the "requirements.txt" file or the + ;; "requires.txt" from the egg-info directory from the source tarball. Note ;; that "requirements.txt" is not mandatory, so this is likely to fail. (or (guess-requirements-from-wheel) (guess-requirements-from-source))) |