diff options
Diffstat (limited to 'guix/scripts/system.scm')
| -rw-r--r-- | guix/scripts/system.scm | 181 |
1 files changed, 36 insertions, 145 deletions
diff --git a/guix/scripts/system.scm b/guix/scripts/system.scm index 67a4071684..9fc3a10e98 100644 --- a/guix/scripts/system.scm +++ b/guix/scripts/system.scm @@ -41,6 +41,7 @@ delete-matching-generations) #:use-module (guix graph) #:use-module (guix scripts graph) + #:use-module (guix scripts system reconfigure) #:use-module (guix build utils) #:use-module (guix progress) #:use-module ((guix build syscalls) #:select (terminal-columns)) @@ -178,43 +179,9 @@ TARGET, and register them." (return *unspecified*))) -(define* (install-bootloader installer - #:key - bootcfg bootcfg-file - target) - "Run INSTALLER, a bootloader installation script, with error handling, in -%STORE-MONAD." - (mlet %store-monad ((installer-drv (if installer - (lower-object installer) - (return #f))) - (bootcfg (lower-object bootcfg))) - (let* ((gc-root (string-append target %gc-roots-directory - "/bootcfg")) - (temp-gc-root (string-append gc-root ".new")) - (install (and installer-drv - (derivation->output-path installer-drv))) - (bootcfg (derivation->output-path bootcfg))) - ;; Prepare the symlink to bootloader config file to make sure that it's - ;; a GC root when 'installer-drv' completes (being a bit paranoid.) - (switch-symlinks temp-gc-root bootcfg) - - (unless (false-if-exception - (begin - (install-boot-config bootcfg bootcfg-file target) - (when install - (save-load-path-excursion (primitive-load install))))) - (delete-file temp-gc-root) - (leave (G_ "failed to install bootloader ~a~%") install)) - - ;; Register bootloader config file as a GC root so that its dependencies - ;; (background image, font, etc.) are not reclaimed. - (rename-file temp-gc-root gc-root) - (return #t)))) - (define* (install os-drv target #:key (log-port (current-output-port)) - bootloader-installer install-bootloader? - bootcfg bootcfg-file) + install-bootloader? bootloader bootcfg) "Copy the closure of BOOTCFG, which includes the output of OS-DRV, to directory TARGET. TARGET must be an absolute directory name since that's what 'register-path' expects. @@ -265,10 +232,11 @@ the ownership of '~a' may be incorrect!~%") (populate os-dir target) (mwhen install-bootloader? - (install-bootloader bootloader-installer - #:bootcfg bootcfg - #:bootcfg-file bootcfg-file - #:target target)))))) + (install-bootloader local-eval bootloader bootcfg + #:target target) + (return + (info (G_ "bootloader successfully installed on '~a'~%") + (bootloader-configuration-target bootloader)))))))) ;;; @@ -335,82 +303,6 @@ unload." (warning (G_ "failed to obtain list of shepherd services~%")) (return #f))))) -(define (upgrade-shepherd-services os) - "Upgrade the Shepherd (PID 1) by unloading obsolete services and loading new -services specified in OS and not currently running. - -This is currently very conservative in that it does not stop or unload any -running service. Unloading or stopping the wrong service ('udev', say) could -bring the system down." - (define new-services - (service-value - (fold-services (operating-system-services os) - #:target-type shepherd-root-service-type))) - - ;; Arrange to simply emit a warning if the service upgrade fails. - (with-shepherd-error-handling - (call-with-service-upgrade-info new-services - (lambda (to-restart to-unload) - (for-each (lambda (unload) - (info (G_ "unloading service '~a'...~%") unload) - (unload-service unload)) - to-unload) - - (with-monad %store-monad - (munless (null? new-services) - (let ((new-service-names (map shepherd-service-canonical-name new-services)) - (to-restart-names (map shepherd-service-canonical-name to-restart)) - (to-start (filter shepherd-service-auto-start? new-services))) - (info (G_ "loading new services:~{ ~a~}...~%") new-service-names) - (unless (null? to-restart-names) - ;; Listing TO-RESTART-NAMES in the message below wouldn't help - ;; because many essential services cannot be meaningfully - ;; restarted. See <https://debbugs.gnu.org/cgi/bugreport.cgi?bug=22039#30>. - (format #t (G_ "To complete the upgrade, run 'herd restart SERVICE' to stop, -upgrade, and restart each service that was not automatically restarted.\n"))) - (mlet %store-monad ((files (mapm %store-monad - (compose lower-object - shepherd-service-file) - new-services))) - ;; Here we assume that FILES are exactly those that were computed - ;; as part of the derivation that built OS, which is normally the - ;; case. - (load-services/safe (map derivation->output-path files)) - - (for-each start-service - (map shepherd-service-canonical-name to-start)) - (return #t))))))))) - -(define* (switch-to-system os - #:optional (profile %system-profile)) - "Make a new generation of PROFILE pointing to the directory of OS, switch to -it atomically, and then run OS's activation script." - (mlet* %store-monad ((drv (operating-system-derivation os)) - (script (lower-object (operating-system-activation-script os)))) - (let* ((system (derivation->output-path drv)) - (number (+ 1 (generation-number profile))) - (generation (generation-file-name profile number))) - (switch-symlinks generation system) - (switch-symlinks profile generation) - - (format #t (G_ "activating system...~%")) - - ;; The activation script may change $PATH, among others, so protect - ;; against that. - (save-environment-excursion - ;; Tell 'activate-current-system' what the new system is. - (setenv "GUIX_NEW_SYSTEM" system) - - ;; The activation script may modify '%load-path' & co., so protect - ;; against that. This is necessary to ensure that - ;; 'upgrade-shepherd-services' gets to see the right modules when it - ;; computes derivations with 'gexp->derivation'. - (save-load-path-excursion - (primitive-load (derivation->output-path script)))) - - ;; Finally, try to update system services. - (upgrade-shepherd-services os)))) - (define-syntax-rule (unless-file-not-found exp) (catch 'system-error (lambda () @@ -505,18 +397,13 @@ STORE is an open connection to the store." ((bootloader-configuration-file-generator bootloader) bootloader-config entries #:old-entries old-entries))) - (bootcfg-file -> (bootloader-configuration-file bootloader)) - (target -> "/") (drvs -> (list bootcfg))) (mbegin %store-monad (show-what-to-build* drvs) (built-derivations drvs) - ;; Only install bootloader configuration file. Thus, no installer is - ;; provided here. - (install-bootloader #f - #:bootcfg bootcfg - #:bootcfg-file bootcfg-file - #:target target)))))) + ;; Only install bootloader configuration file. + (install-bootloader local-eval bootloader-config bootcfg + #:run-installer? #f)))))) ;;; @@ -820,8 +707,17 @@ and TARGET arguments." (condition-message c)) (exit 1))) (#$installer #$bootloader #$device #$target) - (format #t "bootloader successfully installed on '~a'~%" - #$device)))))) + (info (G_ "bootloader successfully installed on '~a'~%") + #$device)))))) + +(define (local-eval exp) + "Evaluate EXP, a G-Expression, in-place." + (mlet* %store-monad ((lowered (lower-gexp exp)) + (_ (built-derivations (lowered-gexp-inputs lowered)))) + (save-load-path-excursion + (set! %load-path (lowered-gexp-load-path lowered)) + (set! %load-compiled-path (lowered-gexp-load-compiled-path lowered)) + (return (primitive-eval (lowered-gexp-sexp lowered)))))) (define* (perform-action action os #:key skip-safety-checks? @@ -858,19 +754,12 @@ static checks." (map boot-parameters->menu-entry (profile-boot-parameters)))) (define bootloader - (bootloader-configuration-bootloader (operating-system-bootloader os))) + (operating-system-bootloader os)) (define bootcfg (and (memq action '(init reconfigure)) (operating-system-bootcfg os menu-entries))) - (define bootloader-script - (let ((installer (bootloader-installer bootloader)) - (target (or target "/"))) - (bootloader-installer-script installer - (bootloader-package bootloader) - bootloader-target target))) - (when (eq? action 'reconfigure) (maybe-suggest-running-guix-pull)) @@ -897,9 +786,7 @@ static checks." ;; See <http://bugs.gnu.org/21068>. (drvs (mapm %store-monad lower-object (if (memq action '(init reconfigure)) - (if install-bootloader? - (list sys bootcfg bootloader-script) - (list sys bootcfg)) + (list sys bootcfg) (list sys)))) (% (if derivations-only? (return (for-each (compose println derivation-file-name) @@ -909,28 +796,32 @@ static checks." (if (or dry-run? derivations-only?) (return #f) - (let ((bootcfg-file (bootloader-configuration-file bootloader))) + (begin (for-each (compose println derivation->output-path) drvs) (case action ((reconfigure) + (newline) + (format #t (G_ "activating system...~%")) (mbegin %store-monad - (switch-to-system os) + (switch-to-system local-eval os) (mwhen install-bootloader? - (install-bootloader bootloader-script - #:bootcfg bootcfg - #:bootcfg-file bootcfg-file - #:target "/")))) + (install-bootloader local-eval bootloader bootcfg + #:target (or target "/")) + (return + (info (G_ "bootloader successfully installed on '~a'~%") + (bootloader-configuration-target bootloader)))) + (with-shepherd-error-handling + (upgrade-shepherd-services local-eval os)))) ((init) (newline) (format #t (G_ "initializing operating system under '~a'...~%") target) (install sys (canonicalize-path target) #:install-bootloader? install-bootloader? - #:bootcfg bootcfg - #:bootcfg-file bootcfg-file - #:bootloader-installer bootloader-script)) + #:bootloader bootloader + #:bootcfg bootcfg)) (else ;; All we had to do was to build SYS and maybe register an ;; indirect GC root. |