guix package: Add `--search-paths' & co.
* guix/scripts/package.scm (search-path-environment-variables, display-search-paths): New procedures. (show-help, %options): Add `--search-paths'. (guix-package)[process-actions]: Call `display-search-paths' once the profile is ready. [process-query]: Honor `search-paths'.master
Ludovic Courtès
parent
2bcfb9e065
commit
5924080dcc
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@ -517,8 +517,13 @@ Thus, when installing MPC, the MPFR and GMP libraries also get installed
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in the profile; removing MPC also removes MPFR and GMP---unless they had
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also been explicitly installed independently.
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Besides, packages sometime rely on the definition of environment
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variables for their search paths (see explanation of
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@code{--search-paths} below.) Any missing or possibly incorrect
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environment variable definitions are reported here.
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@c XXX: keep me up-to-date
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Besides, when installing a GNU package, the tool reports the
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Finally, when installing a GNU package, the tool reports the
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availability of a newer upstream version. In the future, it may provide
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the option of installing directly from the upstream version, even if
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that version is not yet in the distribution.
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@ -566,6 +571,21 @@ Installing, removing, or upgrading packages from a generation that has
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been rolled back to overwrites previous future generations. Thus, the
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history of a profile's generations is always linear.
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@item --search-paths
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@cindex search paths
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Report environment variable definitions, in Bash syntax, that may be
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needed in order to use the set of installed packages. These environment
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variables are used to specify @dfn{search paths} for files used by some
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of the installed packages.
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For example, GCC needs the @code{CPATH} and @code{LIBRARY_PATH}
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environment variables to be defined so it can look for headers and
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libraries in the user's profile (@pxref{Environment Variables,,, gcc,
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Using the GNU Compiler Collection (GCC)}). If GCC and, say, the C
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library are installed in the profile, then @code{--search-paths} will
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suggest setting these variables to @code{@var{profile}/include} and
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@code{@var{profile}/lib}, respectively.
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@item --profile=@var{profile}
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@itemx -p @var{profile}
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Use @var{profile} instead of the user's default profile.
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@ -330,6 +330,53 @@ but ~a is available upstream~%")
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((getaddrinfo-error ftp-error) #f)
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(else (apply throw key args))))))
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(define* (search-path-environment-variables packages profile
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#:optional (getenv getenv))
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"Return environment variable definitions that may be needed for the use of
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PACKAGES in PROFILE. Use GETENV to determine the current settings and report
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only settings not already effective."
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;; The search path info is not stored in the manifest. Thus, we infer the
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;; search paths from same-named packages found in the distro.
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(define package-in-manifest->package
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(match-lambda
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((name version _ ...)
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(match (append (find-packages-by-name name version)
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(find-packages-by-name name))
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((p _ ...) p)
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(_ #f)))))
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(define search-path-definition
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(match-lambda
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(($ <search-path-specification> variable directories separator)
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(let ((values (or (and=> (getenv variable)
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(cut string-tokenize* <> separator))
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'()))
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(directories (filter file-exists?
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(map (cut string-append profile
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"/" <>)
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directories))))
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(if (every (cut member <> values) directories)
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#f
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(format #f "export ~a=\"~a\""
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variable
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(string-join directories separator)))))))
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(let* ((packages (filter-map package-in-manifest->package packages))
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(search-paths (delete-duplicates
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(append-map package-native-search-paths
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packages))))
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(filter-map search-path-definition search-paths)))
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(define (display-search-paths packages profile)
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"Display the search path environment variables that may need to be set for
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PACKAGES, in the context of PROFILE."
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(let ((settings (search-path-environment-variables packages profile)))
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(unless (null? settings)
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(format #t (_ "The following environment variable definitions may be needed:~%"))
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(format #t "~{ ~a~%~}" settings))))
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;;;
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;;; Command-line options.
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@ -354,6 +401,8 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n"))
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-u, --upgrade[=REGEXP] upgrade all the installed packages matching REGEXP"))
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(display (_ "
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--roll-back roll back to the previous generation"))
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(display (_ "
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--search-paths display needed environment variable definitions"))
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(newline)
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(display (_ "
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-p, --profile=PROFILE use PROFILE instead of the user's default profile"))
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@ -408,6 +457,9 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n"))
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(option '("roll-back") #f #f
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(lambda (opt name arg result)
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(alist-cons 'roll-back? #t result)))
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(option '("search-paths") #f #f
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(lambda (opt name arg result)
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(cons `(query search-paths) result)))
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(option '(#\p "profile") #t #f
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(lambda (opt name arg result)
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(alist-cons 'profile arg
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@ -728,7 +780,9 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n"))
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(build-derivations (%store) (list prof-drv)))
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(begin
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(switch-symlinks name prof)
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(switch-symlinks profile name))))))))))
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(switch-symlinks profile name)
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(display-search-paths packages
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profile))))))))))
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(define (process-query opts)
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;; Process any query specified by OPTS. Return #t when a query was
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@ -776,6 +830,16 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n"))
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(for-each (cute package->recutils <> (current-output-port))
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(find-packages-by-description regexp))
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#t))
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(('search-paths)
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(let* ((manifest (profile-manifest profile))
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(packages (manifest-packages manifest))
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(settings (search-path-environment-variables packages
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profile
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(const #f))))
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(format #t "~{~a~%~}" settings)
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#t))
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(_ #f))))
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(let ((opts (parse-options)))
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@ -47,6 +47,10 @@ test -L "$profile" && test -L "$profile-1-link"
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! test -f "$profile-2-link"
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test -f "$profile/bin/guile"
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# No search path env. var. here.
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guix package --search-paths -p "$profile"
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test "`guix package --search-paths -p "$profile" | wc -l`" = 0
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# Check whether we have network access.
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if guile -c '(getaddrinfo "www.gnu.org" "80" AI_NUMERICSERV)' 2> /dev/null
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then
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@ -119,6 +123,10 @@ then
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rm "$profile-1-link"
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guix package --bootstrap -p "$profile" --roll-back
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test "`readlink_base "$profile"`" = "$profile-0-link"
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# Make sure LIBRARY_PATH gets listed by `--search-paths'.
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guix package --bootstrap -p "$profile" -i guile-bootstrap -i gcc-bootstrap
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guix package --search-paths -p "$profile" | grep LIBRARY_PATH
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fi
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# Make sure the `:' syntax works.
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