diff options
| -rw-r--r-- | guix/inferior.scm | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/guix/inferior.scm b/guix/inferior.scm index fc348c427a..668ebabeb0 100644 --- a/guix/inferior.scm +++ b/guix/inferior.scm @@ -19,6 +19,7 @@ (define-module (guix inferior) #:use-module (srfi srfi-9) #:use-module (srfi srfi-9 gnu) + #:use-module (srfi srfi-11) #:use-module (srfi srfi-34) #:use-module (srfi srfi-35) #:use-module ((guix utils) @@ -43,6 +44,9 @@ #:use-module (guix store) #:use-module (guix derivations) #:use-module (guix base32) + #:use-module (gnu system file-systems) + #:use-module (gnu build linux-container) + #:use-module (guix build syscalls) #:use-module (gcrypt hash) #:autoload (guix cache) (maybe-remove-expired-cache-entries file-expiration-time) @@ -58,6 +62,7 @@ #:use-module ((rnrs bytevectors) #:select (string->utf8)) #:export (inferior? open-inferior + open-inferior/container port->inferior close-inferior inferior-eval @@ -150,6 +155,77 @@ it's an old Guix." ((@ (guix repl) machine-repl)))))))) pipe))) +(define* (open-inferior/container store guix-store-item + #:key + (command "bin/guix") + (share-host-network? #f) + (extra-shared-directories '()) + (extra-environment-variables '())) + (define requisite-store-items + (requisites store (list guix-store-item))) + + (define shared-directory + (mkdtemp! (string-append (or (getenv "TMPDIR") "/tmp") + "/guix-inferior.XXXXXX"))) + + (define mappings + (append + (map (lambda (dir) + (file-system-mapping + (source dir) + (target dir) + (writable? #f))) + `(;; Share a directory, used in inferior-eval-with-store + ,shared-directory + ,@requisite-store-items + ,@extra-shared-directories)) + (if share-host-network? + %network-file-mappings + '()))) + + (define mounts + (append %container-file-systems + (map file-system-mapping->bind-mount + mappings))) + + (define (inferior-pipe/container store + guix-store-item + shared-directory + command) + (start-child-in-container + (list (string-append guix-store-item "/bin/guix") + ;; TODO I'm not sure why "repl" is duplicated in the following + ;; command + "repl" "repl" "-t" "machine") + #:read? #t + #:write? #t + #:mounts mounts + #:namespaces (if share-host-network? + (delq 'net %namespaces) + %namespaces) + #:extra-environment-variables + `(;; Set HOME, so that the (guix profiles) module can be loaded, without it + ;; trying to read from /etc/passwd + "HOME=/tmp" + ,@extra-environment-variables))) + + (let*-values + (((pipe pid) + (inferior-pipe/container store + guix-store-item + shared-directory + command)) + ((close-inferior-pipe) + (lambda (pipe*) + (unless (eq? pipe pipe*) + (error "wrong pipe being closed")) + (close-port pipe) + (cdr (waitpid pid))))) + + (port->inferior pipe + shared-directory + close-inferior-pipe))) + (define* (port->inferior pipe shared-directory #:optional (close close-port)) "Given PIPE, an input/output port, return an inferior that talks over PIPE. PIPE is closed with CLOSE when 'close-inferior' is called on the returned |