diff options
Diffstat (limited to 'guix')
| -rw-r--r-- | guix/profiles.scm | 41 | ||||
| -rw-r--r-- | guix/scripts/environment.scm | 51 |
2 files changed, 49 insertions, 43 deletions
diff --git a/guix/profiles.scm b/guix/profiles.scm index 8cbffa4d2b..09b2d1525a 100644 --- a/guix/profiles.scm +++ b/guix/profiles.scm @@ -11,6 +11,7 @@ ;;; Copyright © 2019 Kyle Meyer <kyle@kyleam.com> ;;; Copyright © 2019 Mathieu Othacehe <m.othacehe@gmail.com> ;;; Copyright © 2020 Danny Milosavljevic <dannym@scratchpost.org> +;;; Copyright © 2014 David Thompson <davet@gnu.org> ;;; ;;; This file is part of GNU Guix. ;;; @@ -54,6 +55,7 @@ #:use-module (srfi srfi-26) #:use-module (srfi srfi-34) #:use-module (srfi srfi-35) + #:autoload (srfi srfi-98) (get-environment-variables) #:export (&profile-error profile-error? profile-error-profile @@ -127,6 +129,7 @@ %default-profile-hooks profile-derivation profile-search-paths + load-profile profile profile? @@ -1916,6 +1919,44 @@ already effective." (evaluate-search-paths (manifest-search-paths manifest) (list profile) getenv)) +(define %precious-variables + ;; Environment variables in the default 'load-profile' white list. + '("HOME" "USER" "LOGNAME" "DISPLAY" "TERM" "TZ" "PAGER")) + +(define (purify-environment white-list white-list-regexps) + "Unset all environment variables except those that match the regexps in +WHITE-LIST-REGEXPS and those listed in WHITE-LIST." + (for-each unsetenv + (remove (lambda (variable) + (or (member variable white-list) + (find (cut regexp-exec <> variable) + white-list-regexps))) + (match (get-environment-variables) + (((names . _) ...) + names))))) + +(define* (load-profile profile + #:optional (manifest (profile-manifest profile)) + #:key pure? (white-list-regexps '()) + (white-list %precious-variables)) + "Set the environment variables specified by MANIFEST for PROFILE. When +PURE? is #t, unset the variables in the current environment except those that +match the regexps in WHITE-LIST-REGEXPS and those listed in WHITE-LIST. +Otherwise, augment existing environment variables with additional search +paths." + (when pure? + (purify-environment white-list white-list-regexps)) + (for-each (match-lambda + ((($ <search-path-specification> variable _ separator) . value) + (let ((current (getenv variable))) + (setenv variable + (if (and current (not pure?)) + (if separator + (string-append value separator current) + value) + value))))) + (profile-search-paths profile manifest))) + (define (profile-regexp profile) "Return a regular expression that matches PROFILE's name and number." (make-regexp (string-append "^" (regexp-quote (basename profile)) diff --git a/guix/scripts/environment.scm b/guix/scripts/environment.scm index 5ceb86f7a9..6958bd6238 100644 --- a/guix/scripts/environment.scm +++ b/guix/scripts/environment.scm @@ -52,50 +52,9 @@ #:export (assert-container-features guix-environment)) -;; Protect some env vars from purification. Borrowed from nix-shell. -(define %precious-variables - '("HOME" "USER" "LOGNAME" "DISPLAY" "TERM" "TZ" "PAGER")) - (define %default-shell (or (getenv "SHELL") "/bin/sh")) -(define (purify-environment white-list) - "Unset all environment variables except those that match the regexps in -WHITE-LIST and those listed in %PRECIOUS-VARIABLES. A small number of -variables such as 'HOME' and 'USER' are left untouched." - (for-each unsetenv - (remove (lambda (variable) - (or (member variable %precious-variables) - (find (cut regexp-exec <> variable) - white-list))) - (match (get-environment-variables) - (((names . _) ...) - names))))) - -(define* (create-environment profile manifest - #:key pure? (white-list '())) - "Set the environment variables specified by MANIFEST for PROFILE. When -PURE? is #t, unset the variables in the current environment except those that -match the regexps in WHITE-LIST. Otherwise, augment existing environment -variables with additional search paths." - (when pure? - (purify-environment white-list)) - (for-each (match-lambda - ((($ <search-path-specification> variable _ separator) . value) - (let ((current (getenv variable))) - (setenv variable - (if (and current (not pure?)) - (if separator - (string-append value separator current) - value) - value))))) - (profile-search-paths profile manifest)) - - ;; Give users a way to know that they're in 'guix environment', so they can - ;; adjust 'PS1' accordingly, for instance. Set it to PROFILE so users can - ;; conveniently access its contents. - (setenv "GUIX_ENVIRONMENT" profile)) - (define* (show-search-paths profile manifest #:key pure?) "Display the search paths of MANIFEST applied to PROFILE. When PURE? is #t, do not augment existing environment variables with additional search paths." @@ -425,8 +384,14 @@ regexps in WHITE-LIST." ;; Properly handle SIGINT, so pressing C-c in an interactive terminal ;; application works. (sigaction SIGINT SIG_DFL) - (create-environment profile manifest - #:pure? pure? #:white-list white-list) + (load-profile profile manifest + #:pure? pure? #:white-list-regexps white-list) + + ;; Give users a way to know that they're in 'guix environment', so they can + ;; adjust 'PS1' accordingly, for instance. Set it to PROFILE so users can + ;; conveniently access its contents. + (setenv "GUIX_ENVIRONMENT" profile) + (match command ((program . args) (apply execlp program program args)))) |