diff options
| -rw-r--r-- | doc/guix.texi | 17 | ||||
| -rw-r--r-- | guix/scripts/environment.scm | 27 |
2 files changed, 40 insertions, 4 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 1956dbc422..2d10ec9b59 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -2381,7 +2381,7 @@ the @code{#:haddock-flags} parameter. If the file @code{Setup.hs} is not found, the build system looks for @code{Setup.lhs} instead. Which Haskell compiler is used can be specified with the @code{#:haskell} -parameter which defaults to @code{ghc}. +parameter which defaults to @code{ghc}. @end defvr Lastly, for packages that do not need anything as sophisticated, a @@ -3932,6 +3932,21 @@ evaluates to. @item -E @var{command} Execute @var{command} in the new environment. +@item --ad-hoc +Include all specified packages in the resulting environment, as if an +@i{ad hoc} package were defined with them as inputs. This option is +useful for quickly creating an environment without having to write a +package expression to contain the desired inputs. + +For instance, the command: + +@example +guix environment --ad-hoc guile guile-sdl -E guile +@end example + +runs @command{guile} in an environment where Guile and Guile-SDL are +available. + @item --pure Unset existing environment variables when building the new environment. This has the effect of creating an environment in which search paths diff --git a/guix/scripts/environment.scm b/guix/scripts/environment.scm index d053daf02e..42178091e6 100644 --- a/guix/scripts/environment.scm +++ b/guix/scripts/environment.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2014 David Thompson <davet@gnu.org> +;;; Copyright © 2014, 2015 David Thompson <davet@gnu.org> ;;; Copyright © 2015 Ludovic Courtès <ludo@gnu.org> ;;; ;;; This file is part of GNU Guix. @@ -103,6 +103,9 @@ shell command in that environment.\n")) (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")) @@ -147,6 +150,9 @@ shell command in that environment.\n")) (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))) @@ -191,6 +197,18 @@ packages." (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?)) @@ -218,9 +236,12 @@ packages." (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)) - (inputs (packages->transitive-inputs - (pick-all (options/resolve-packages opts) 'package))) + (packages (pick-all (options/resolve-packages opts) 'package)) + (inputs (if ad-hoc? + (packages+propagated-inputs packages) + (packages->transitive-inputs packages))) (drvs (run-with-store store (mbegin %store-monad (set-guile-for-build (default-guile)) |