c2590362ad
* guix/scripts/environment.scm (guix-environment): Call 'parse-command-line' outside of 'with-store'. This allows things like --help to run even if the daemon is not running.
258 lines
10 KiB
Scheme
258 lines
10 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
|
;;; Copyright © 2014, 2015 David Thompson <davet@gnu.org>
|
|
;;; Copyright © 2015 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 scripts environment)
|
|
#:use-module (guix ui)
|
|
#:use-module (guix store)
|
|
#:use-module (guix derivations)
|
|
#:use-module (guix packages)
|
|
#:use-module (guix profiles)
|
|
#:use-module (guix search-paths)
|
|
#:use-module (guix utils)
|
|
#:use-module (guix monads)
|
|
#:use-module (guix scripts build)
|
|
#:use-module (gnu packages)
|
|
#:use-module (ice-9 format)
|
|
#:use-module (ice-9 match)
|
|
#:use-module (srfi srfi-1)
|
|
#:use-module (srfi srfi-26)
|
|
#:use-module (srfi srfi-37)
|
|
#:use-module (srfi srfi-98)
|
|
#:export (guix-environment))
|
|
|
|
(define (evaluate-input-search-paths inputs derivations)
|
|
"Evaluate the native search paths of INPUTS, a list of packages, of the
|
|
outputs of DERIVATIONS, and return a list of search-path/value pairs."
|
|
(let ((directories (append-map (lambda (drv)
|
|
(map (match-lambda
|
|
((_ . output)
|
|
(derivation-output-path output)))
|
|
(derivation-outputs drv)))
|
|
derivations))
|
|
(paths (cons $PATH
|
|
(delete-duplicates
|
|
(append-map package-native-search-paths
|
|
inputs)))))
|
|
(evaluate-search-paths paths directories)))
|
|
|
|
;; Protect some env vars from purification. Borrowed from nix-shell.
|
|
(define %precious-variables
|
|
'("HOME" "USER" "LOGNAME" "DISPLAY" "TERM" "TZ" "PAGER"))
|
|
|
|
(define (purify-environment)
|
|
"Unset almost all environment variables. A small number of variables such
|
|
as 'HOME' and 'USER' are left untouched."
|
|
(for-each unsetenv
|
|
(remove (cut member <> %precious-variables)
|
|
(match (get-environment-variables)
|
|
(((names . _) ...)
|
|
names)))))
|
|
|
|
(define (create-environment inputs derivations pure?)
|
|
"Set the needed environment variables for all packages within INPUTS. When
|
|
PURE? is #t, unset the variables in the current environment. Otherwise,
|
|
augment existing enviroment variables with additional search paths."
|
|
(when pure? (purify-environment))
|
|
(for-each (match-lambda
|
|
((($ <search-path-specification> variable _ separator) . value)
|
|
(let ((current (getenv variable)))
|
|
(setenv variable
|
|
(if (and current (not pure?))
|
|
(string-append value separator current)
|
|
value)))))
|
|
(evaluate-input-search-paths inputs derivations)))
|
|
|
|
(define (show-search-paths inputs derivations pure?)
|
|
"Display the needed search paths to build an environment that contains the
|
|
packages within INPUTS. When PURE? is #t, do not augment existing environment
|
|
variables with additional search paths."
|
|
(for-each (match-lambda
|
|
((search-path . value)
|
|
(display
|
|
(search-path-definition search-path value
|
|
#:kind (if pure? 'exact 'prefix)))
|
|
(newline)))
|
|
(evaluate-input-search-paths inputs derivations)))
|
|
|
|
(define (show-help)
|
|
(display (_ "Usage: guix environment [OPTION]... PACKAGE...
|
|
Build an environment that includes the dependencies of PACKAGE and execute a
|
|
shell command in that environment.\n"))
|
|
(display (_ "
|
|
-e, --expression=EXPR create environment for the package that EXPR
|
|
evaluates to"))
|
|
(display (_ "
|
|
-l, --load=FILE create environment for the package that the code within
|
|
FILE evaluates to"))
|
|
(display (_ "
|
|
-E, --exec=COMMAND execute COMMAND in new environment"))
|
|
(display (_ "
|
|
--ad-hoc include all specified packages in the environment instead
|
|
of only their inputs"))
|
|
(display (_ "
|
|
--pure unset existing environment variables"))
|
|
(display (_ "
|
|
--search-paths display needed environment variable definitions"))
|
|
(newline)
|
|
(show-build-options-help)
|
|
(newline)
|
|
(display (_ "
|
|
-h, --help display this help and exit"))
|
|
(display (_ "
|
|
-V, --version display version information and exit"))
|
|
(newline)
|
|
(show-bug-report-information))
|
|
|
|
(define %default-options
|
|
;; Default to opening a new shell.
|
|
`((exec . ,(or (getenv "SHELL") "/bin/sh"))
|
|
(substitutes? . #t)
|
|
(max-silent-time . 3600)
|
|
(verbosity . 0)))
|
|
|
|
(define %options
|
|
;; Specification of the command-line options.
|
|
(cons* (option '(#\h "help") #f #f
|
|
(lambda args
|
|
(show-help)
|
|
(exit 0)))
|
|
(option '(#\V "version") #f #f
|
|
(lambda args
|
|
(show-version-and-exit "guix environment")))
|
|
(option '("pure") #f #f
|
|
(lambda (opt name arg result)
|
|
(alist-cons 'pure #t result)))
|
|
(option '(#\E "exec") #t #f
|
|
(lambda (opt name arg result)
|
|
(alist-cons 'exec arg result)))
|
|
(option '("search-paths") #f #f
|
|
(lambda (opt name arg result)
|
|
(alist-cons 'search-paths #t result)))
|
|
(option '(#\l "load") #t #f
|
|
(lambda (opt name arg result)
|
|
(alist-cons 'load arg result)))
|
|
(option '(#\e "expression") #t #f
|
|
(lambda (opt name arg result)
|
|
(alist-cons 'expression arg result)))
|
|
(option '("ad-hoc") #f #f
|
|
(lambda (opt name arg result)
|
|
(alist-cons 'ad-hoc? #t result)))
|
|
(option '(#\n "dry-run") #f #f
|
|
(lambda (opt name arg result)
|
|
(alist-cons 'dry-run? #t result)))
|
|
%standard-build-options))
|
|
|
|
(define (pick-all alist key)
|
|
"Return a list of values in ALIST associated with KEY."
|
|
(define same-key? (cut eq? key <>))
|
|
|
|
(fold (lambda (pair memo)
|
|
(match pair
|
|
(((? same-key? k) . v)
|
|
(cons v memo))
|
|
(_ memo)))
|
|
'() alist))
|
|
|
|
(define (options/resolve-packages opts)
|
|
"Return OPTS with package specification strings replaced by actual
|
|
packages."
|
|
(map (match-lambda
|
|
(('package . (? string? spec))
|
|
`(package . ,(specification->package spec)))
|
|
(('expression . str)
|
|
(match (read/eval str)
|
|
((? package? p)
|
|
`(package . ,p))))
|
|
(('load . file)
|
|
`(package . ,(load (string-append (getcwd) "/" file))))
|
|
(opt opt))
|
|
opts))
|
|
|
|
(define (packages->transitive-inputs packages)
|
|
"Return a list of the transitive inputs for all PACKAGES."
|
|
(define (transitive-inputs package)
|
|
(filter-map (match-lambda
|
|
((or (_ (? package? package))
|
|
(_ (? package? package) _))
|
|
package)
|
|
(_ #f))
|
|
(bag-transitive-inputs
|
|
(package->bag package))))
|
|
(delete-duplicates
|
|
(append-map transitive-inputs packages)))
|
|
|
|
(define (packages+propagated-inputs packages)
|
|
"Return a list containing PACKAGES plus all of their propagated inputs."
|
|
(delete-duplicates
|
|
(append packages
|
|
(map (match-lambda
|
|
((or (_ (? package? package))
|
|
(_ (? package? package) _))
|
|
package)
|
|
(_ #f))
|
|
(append-map package-transitive-propagated-inputs
|
|
packages)))))
|
|
|
|
(define (build-inputs inputs opts)
|
|
"Build the packages in INPUTS using the build options in OPTS."
|
|
(let ((substitutes? (assoc-ref opts 'substitutes?))
|
|
(dry-run? (assoc-ref opts 'dry-run?)))
|
|
(mlet* %store-monad ((drvs (sequence %store-monad
|
|
(map package->derivation inputs))))
|
|
(mbegin %store-monad
|
|
(show-what-to-build* drvs
|
|
#:use-substitutes? substitutes?
|
|
#:dry-run? dry-run?)
|
|
(if dry-run?
|
|
(return #f)
|
|
(mbegin %store-monad
|
|
(set-build-options-from-command-line* opts)
|
|
(built-derivations drvs)
|
|
(return drvs)))))))
|
|
|
|
;; Entry point.
|
|
(define (guix-environment . args)
|
|
(define (handle-argument arg result)
|
|
(alist-cons 'package arg result))
|
|
|
|
(with-error-handling
|
|
(let* ((opts (parse-command-line args %options (list %default-options)
|
|
#:argument-handler handle-argument))
|
|
(pure? (assoc-ref opts 'pure))
|
|
(ad-hoc? (assoc-ref opts 'ad-hoc?))
|
|
(command (assoc-ref opts 'exec))
|
|
(packages (pick-all (options/resolve-packages opts) 'package))
|
|
(inputs (if ad-hoc?
|
|
(packages+propagated-inputs packages)
|
|
(packages->transitive-inputs packages))))
|
|
(with-store store
|
|
(define drvs
|
|
(run-with-store store
|
|
(mbegin %store-monad
|
|
(set-guile-for-build (default-guile))
|
|
(build-inputs inputs opts))))
|
|
|
|
(cond ((assoc-ref opts 'dry-run?)
|
|
#t)
|
|
((assoc-ref opts 'search-paths)
|
|
(show-search-paths inputs drvs pure?))
|
|
(else
|
|
(create-environment inputs drvs pure?)
|
|
(system command)))))))
|