diff options
Diffstat (limited to 'build-aux/build-self.scm')
| -rw-r--r-- | build-aux/build-self.scm | 272 |
1 files changed, 57 insertions, 215 deletions
diff --git a/build-aux/build-self.scm b/build-aux/build-self.scm index ed8ff5f4ce..d9d9263678 100644 --- a/build-aux/build-self.scm +++ b/build-aux/build-self.scm @@ -17,11 +17,9 @@ ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. (define-module (build-self) - #:use-module (gnu) - #:use-module (guix) - #:use-module (guix config) #:use-module (srfi srfi-1) #:use-module (srfi srfi-19) + #:use-module (srfi srfi-26) #:use-module (ice-9 match) #:export (build)) @@ -31,105 +29,51 @@ ;;; argument: the source tree to build. It returns a derivation that ;;; builds it. ;;; -;;; This file uses modules provided by the already-installed Guix. Those -;;; modules may be arbitrarily old compared to the version we want to -;;; build. Because of that, it must rely on the smallest set of features -;;; that are likely to be provided by the (guix) and (gnu) modules, and by -;;; Guile itself, forever and ever. -;;; ;;; Code: - -;; The dependencies. Don't refer explicitly to the variables because they -;; could be renamed or shuffled around in modules over time. Conversely, -;; 'find-best-packages-by-name' is expected to always have the same semantics. - -(define libgcrypt - (first (find-best-packages-by-name "libgcrypt" #f))) - -(define zlib - (first (find-best-packages-by-name "zlib" #f))) - -(define gzip - (first (find-best-packages-by-name "gzip" #f))) - -(define bzip2 - (first (find-best-packages-by-name "bzip2" #f))) - -(define xz - (first (find-best-packages-by-name "xz" #f))) - -(define (false-if-wrong-guile package) - "Return #f if PACKAGE depends on the \"wrong\" major version of Guile (e.g., -2.0 instead of 2.2), otherwise return PACKAGE." - (let ((guile (any (match-lambda - ((label (? package? dep) _ ...) - (and (string=? (package-name dep) "guile") - dep))) - (package-direct-inputs package)))) - (and (or (not guile) - (string-prefix? (effective-version) - (package-version guile))) - package))) - -(define (package-for-current-guile . names) - "Return the package with one of the given NAMES that depends on the current -Guile major version (2.0 or 2.2), or #f if none of the packages matches." - (let loop ((names names)) - (match names - (() - #f) - ((name rest ...) - (match (find-best-packages-by-name name #f) - (() - (loop rest)) - ((first _ ...) - (or (false-if-wrong-guile first) - (loop rest)))))))) - -(define guile-json - (package-for-current-guile "guile-json" - "guile2.2-json" - "guile2.0-json")) - -(define guile-ssh - (package-for-current-guile "guile-ssh" - "guile2.2-ssh" - "guile2.0-ssh")) - -(define guile-git - (package-for-current-guile "guile-git" - "guile2.0-git")) - -(define guile-bytestructures - (package-for-current-guile "guile-bytestructures" - "guile2.0-bytestructures")) - -;; The actual build procedure. - -(define (top-source-directory) - "Return the name of the top-level directory of this source tree." +;; Use our very own Guix modules. +(eval-when (compile load eval) (and=> (assoc-ref (current-source-location) 'filename) (lambda (file) - (string-append (dirname file) "/..")))) - + (let ((dir (string-append (dirname file) "/.."))) + (set! %load-path (cons dir %load-path)))))) (define (date-version-string) "Return the current date and hour in UTC timezone, for use as a poor person's version identifier." - ;; XXX: Replace with a Git commit id. + ;; XXX: Last resort when the Git commit id is missing. (date->string (current-date 0) "~Y~m~d.~H")) -(define (guile-for-build) - "Return a derivation for Guile 2.0 or 2.2, whichever matches the currently -running Guile." - (package->derivation (cond-expand - (guile-2.2 - (canonical-package - (specification->package "guile@2.2"))) - (else - (canonical-package - (specification->package "guile@2.0")))))) +(define-syntax parameterize* + (syntax-rules () + "Like 'parameterize' but for regular variables (!)." + ((_ ((var value) rest ...) body ...) + (let ((old var) + (new value)) + (dynamic-wind + (lambda () + (set! var new)) + (lambda () + (parameterize* (rest ...) body ...)) + (lambda () + (set! var old))))) + ((_ () body ...) + (begin body ...)))) + +(define (pure-load-compiled-path) + "Return %LOAD-COMPILED-PATH minus the directories containing .go files from +Guix." + (define (purify path) + (fold-right delete path + (filter-map (lambda (file) + (and=> (search-path path file) dirname)) + '("guix.go" "gnu.go")))) + + (let loop ((path %load-compiled-path)) + (let ((next (purify path))) + (if (equal? next path) + path + (loop next))))) ;; The procedure below is our return value. (define* (build source @@ -138,131 +82,29 @@ running Guile." #:rest rest) "Return a derivation that unpacks SOURCE into STORE and compiles Scheme files." - ;; The '%xxxdir' variables were added to (guix config) in July 2016 so we - ;; cannot assume that they are defined. Try to guess their value when - ;; they're undefined (XXX: we get an incorrect guess when environment - ;; variables such as 'NIX_STATE_DIR' are defined!). - (define storedir - (if (defined? '%storedir) %storedir %store-directory)) - (define localstatedir - (if (defined? '%localstatedir) %localstatedir (dirname %state-directory))) - (define sysconfdir - (if (defined? '%sysconfdir) %sysconfdir (dirname %config-directory))) - (define sbindir - (if (defined? '%sbindir) %sbindir (dirname %guix-register-program))) - - (define builder - #~(begin - (use-modules (guix build pull)) - - (letrec-syntax ((maybe-load-path - (syntax-rules () - ((_ item rest ...) - (let ((tail (maybe-load-path rest ...))) - (if (string? item) - (cons (string-append item - "/share/guile/site/" - #$(effective-version)) - tail) - tail))) - ((_) - '())))) - (set! %load-path - (append - (maybe-load-path #$guile-json #$guile-ssh - #$guile-git #$guile-bytestructures) - %load-path))) - - (letrec-syntax ((maybe-load-compiled-path - (syntax-rules () - ((_ item rest ...) - (let ((tail (maybe-load-compiled-path rest ...))) - (if (string? item) - (cons (string-append item - "/lib/guile/" - #$(effective-version) - "/site-ccache") - tail) - tail))) - ((_) - '())))) - (set! %load-compiled-path - (append - (maybe-load-compiled-path #$guile-json #$guile-ssh - #$guile-git #$guile-bytestructures) - %load-compiled-path))) - - ;; XXX: The 'guile-ssh' package prior to Guix commit 92b7258 was - ;; broken: libguile-ssh could not be found. Work around that. - ;; FIXME: We want Guile-SSH 0.10.2 or later anyway. - #$(if (string-prefix? "0.9." (package-version guile-ssh)) - #~(setenv "LTDL_LIBRARY_PATH" (string-append #$guile-ssh "/lib")) - #t) - - (build-guix #$output #$source - - #:system #$%system - #:storedir #$storedir - #:localstatedir #$localstatedir - #:sysconfdir #$sysconfdir - #:sbindir #$sbindir - - #:package-name #$%guix-package-name - #:package-version #$version - #:bug-report-address #$%guix-bug-report-address - #:home-page-url #$%guix-home-page-url - - #:libgcrypt #$libgcrypt - #:zlib #$zlib - #:gzip #$gzip - #:bzip2 #$bzip2 - #:xz #$xz - - ;; XXX: This is not perfect, enabling VERBOSE? means - ;; building a different derivation. - #:debug-port (if #$verbose? - (current-error-port) - (%make-void-port "w"))))) - - (unless guile-git - ;; XXX: Guix before February 2017 lacks a 'guile-git' package altogether. - ;; If we try to upgrade anyway, the logic in (guix scripts pull) will not - ;; build (guix git), which will leave us with an unusable 'guix pull'. To - ;; avoid that, fail early. - (format (current-error-port) - "\ -Your installation is too old and lacks a '~a' package. -Please upgrade to an intermediate version first, for instance with: - - guix pull --url=https://git.savannah.gnu.org/cgit/guix.git/snapshot/v0.13.0.tar.gz -\n" - (match (effective-version) - ("2.0" "guile2.0-git") - (_ "guile-git"))) - (exit 1)) - - (mlet %store-monad ((guile (guile-for-build))) - (gexp->derivation "guix-latest" builder - #:modules '((guix build pull) - (guix build utils) - (guix build compile) - - ;; Closure of (guix modules). - (guix modules) - (guix memoization) - (guix sets)) - - ;; Arrange so that our own (guix build …) modules are - ;; used. - #:module-path (list (top-source-directory)) - - #:guile-for-build guile))) + ;; Start by jumping into the target Guix so that we have access to the + ;; latest packages and APIs. + ;; + ;; Our checkout in the store has mtime set to the epoch, and thus .go + ;; files look newer, even though they may not correspond. + (parameterize* ((%load-should-auto-compile #f) + (%fresh-auto-compile #f) + + ;; Work around <https://bugs.gnu.org/29226>. + (%load-compiled-path (pure-load-compiled-path))) + ;; FIXME: This is currently too expensive notably because it involves + ;; compiling a number of the big package files such as perl.scm, which + ;; takes lots of time and memory as of Guile 2.2.2. + ;; + ;; (let ((reload-guix (module-ref (resolve-interface '(guix self)) + ;; 'reload-guix))) + ;; (reload-guix)) ;cross fingers! + + (let ((guix-derivation (module-ref (resolve-interface '(guix self)) + 'guix-derivation))) + (guix-derivation source version)))) ;; This file is loaded by 'guix pull'; return it the build procedure. build -;; Local Variables: -;; eval: (put 'with-load-path 'scheme-indent-function 1) -;; End: - ;;; build-self.scm ends here |