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authorLudovic Courtès <ludo@gnu.org>2018-07-09 13:22:29 +0200
committerLudovic Courtès <ludo@gnu.org>2018-07-11 00:52:36 +0200
commit78d55b703d155d36520e1c93dc08a6502c56bd55 (patch)
treef4a83a9baffada3b7bdfa8b5bfb784796749f3c3 /guix
parent10f0a40c16bb572ab7b45f32e39b7761e519ba32 (diff)
profiles: Introduce 'profile-search-paths' and use it.
* guix/profiles.scm (profile-search-paths): New procedure. * guix/scripts/environment.scm (evaluate-search-paths): Remove. (create-environment): Replace 'paths' with 'manifest'. Use 'profile-search-paths' instead of 'evaluate-search-paths'. (show-search-paths): Likewise. (launch-environment): Replace 'paths' with 'manifest'. Make 'pure?' a keyword parameter. (launch-environment/fork, launch-environment/container): Likewise. (guix-environment): Remove 'paths' variable. Adjust callers of the above procedures accordingly.
Diffstat (limited to 'guix')
-rw-r--r--guix/profiles.scm14
-rw-r--r--guix/scripts/environment.scm54
2 files changed, 39 insertions, 29 deletions
diff --git a/guix/profiles.scm b/guix/profiles.scm
index 88228f1558..d2a794b187 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -110,6 +110,7 @@
ca-certificate-bundle
%default-profile-hooks
profile-derivation
+ profile-search-paths
generation-number
generation-numbers
@@ -1400,6 +1401,19 @@ are cross-built for TARGET."
;; to have no substitute to offer.
#:substitutable? #f)))
+(define* (profile-search-paths profile
+ #:optional (manifest (profile-manifest profile))
+ #:key (getenv (const #f)))
+ "Read the manifest of PROFILE and evaluate the values of search path
+environment variables required by PROFILE; return a list of
+specification/value pairs. If MANIFEST is not #f, it is assumed to be the
+manifest of PROFILE, which avoids rereading it.
+
+Use GETENV to determine the current settings and report only settings not
+already effective."
+ (evaluate-search-paths (manifest-search-paths manifest)
+ (list profile) getenv))
+
(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 9a69e3b269..1c04800e42 100644
--- a/guix/scripts/environment.scm
+++ b/guix/scripts/environment.scm
@@ -49,11 +49,6 @@
#:use-module (srfi srfi-98)
#:export (guix-environment))
-(define (evaluate-profile-search-paths profile search-paths)
- "Evaluate SEARCH-PATHS, a list of search-path specifications, for the
-directories in PROFILE, the store path of a profile."
- (evaluate-search-paths search-paths (list profile)))
-
;; Protect some env vars from purification. Borrowed from nix-shell.
(define %precious-variables
'("HOME" "USER" "LOGNAME" "DISPLAY" "TERM" "TZ" "PAGER"))
@@ -70,8 +65,8 @@ as 'HOME' and 'USER' are left untouched."
(((names . _) ...)
names)))))
-(define (create-environment profile paths pure?)
- "Set the environment variables specified by PATHS for PROFILE. When PURE?
+(define* (create-environment profile manifest #:key pure?)
+ "Set the environment variables specified by MANIFEST for PROFILE. When PURE?
is #t, unset the variables in the current environment. Otherwise, augment
existing environment variables with additional search paths."
(when pure? (purify-environment))
@@ -84,23 +79,23 @@ existing environment variables with additional search paths."
(string-append value separator current)
value)
value)))))
- (evaluate-profile-search-paths profile paths))
+ (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 search-paths pure?)
- "Display SEARCH-PATHS applied to PROFILE. When PURE? is #t, do not augment
-existing environment variables with additional search paths."
+(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."
(for-each (match-lambda
((search-path . value)
(display
(search-path-definition search-path value
#:kind (if pure? 'exact 'prefix)))
(newline)))
- (evaluate-profile-search-paths profile search-paths)))
+ (profile-search-paths profile manifest)))
(define (input->manifest-entry input)
"Return a manifest entry for INPUT, or #f if INPUT does not correspond to a
@@ -379,32 +374,34 @@ and suitable for 'exit'."
(define exit/status (compose exit status->exit-code))
(define primitive-exit/status (compose primitive-exit status->exit-code))
-(define (launch-environment command inputs paths pure?)
+(define* (launch-environment command profile manifest
+ #:key pure?)
"Run COMMAND in a new environment containing INPUTS, using the native search
paths defined by the list PATHS. When PURE?, pre-existing environment
variables are cleared before setting the new ones."
;; Properly handle SIGINT, so pressing C-c in an interactive terminal
;; application works.
(sigaction SIGINT SIG_DFL)
- (create-environment inputs paths pure?)
+ (create-environment profile manifest #:pure? pure?)
(match command
((program . args)
(apply execlp program program args))))
-(define (launch-environment/fork command inputs paths pure?)
- "Run COMMAND in a new process with an environment containing INPUTS, using
-the native search paths defined by the list PATHS. When PURE?, pre-existing
-environment variables are cleared before setting the new ones."
+(define* (launch-environment/fork command profile manifest #:key pure?)
+ "Run COMMAND in a new process with an environment containing PROFILE, with
+the search paths specified by MANIFEST. When PURE?, pre-existing environment
+variables are cleared before setting the new ones."
(match (primitive-fork)
- (0 (launch-environment command inputs paths pure?))
+ (0 (launch-environment command profile manifest
+ #:pure? pure?))
(pid (match (waitpid pid)
((_ . status) status)))))
(define* (launch-environment/container #:key command bash user user-mappings
- profile paths link-profile? network?)
+ profile manifest link-profile? network?)
"Run COMMAND within a container that features the software in PROFILE.
-Environment variables are set according to PATHS, a list of native search
-paths. The global shell is BASH, a file name for a GNU Bash binary in the
+Environment variables are set according to the search paths of MANIFEST.
+The global shell is BASH, a file name for a GNU Bash binary in the
store. When NETWORK?, access to the host system network is permitted.
USER-MAPPINGS, a list of file system mappings, contains the user-specified
host file systems to mount inside the container. If USER is not #f, each
@@ -496,7 +493,7 @@ will be used for the passwd entry. LINK-PROFILE? creates a symbolic link from
(primitive-exit/status
;; A container's environment is already purified, so no need to
;; request it be purified again.
- (launch-environment command profile paths #f)))
+ (launch-environment command profile manifest #:pure? #f)))
#:namespaces (if network?
(delq 'net %namespaces) ; share host network
%namespaces)))))))
@@ -654,8 +651,7 @@ message if any test fails."
'("/bin/sh")
(list %default-shell))))
(manifest (options/resolve-packages opts))
- (mappings (pick-all opts 'file-system-mapping))
- (paths (manifest-search-paths manifest)))
+ (mappings (pick-all opts 'file-system-mapping)))
(when container? (assert-container-features))
@@ -700,7 +696,7 @@ message if any test fails."
((assoc-ref opts 'dry-run?)
(return #t))
((assoc-ref opts 'search-paths)
- (show-search-paths profile paths pure?)
+ (show-search-paths profile manifest #:pure? pure?)
(return #t))
(container?
(let ((bash-binary
@@ -713,11 +709,11 @@ message if any test fails."
#:user user
#:user-mappings mappings
#:profile profile
- #:paths paths
+ #:manifest manifest
#:link-profile? link-prof?
#:network? network?)))
(else
(return
(exit/status
- (launch-environment/fork command profile
- paths pure?)))))))))))))
+ (launch-environment/fork command profile manifest
+ #:pure? pure?)))))))))))))