diff options
Diffstat (limited to 'build-aux')
| -rw-r--r-- | build-aux/build-self.scm | 272 |
1 files changed, 215 insertions, 57 deletions
diff --git a/build-aux/build-self.scm b/build-aux/build-self.scm index d9d9263678..ed8ff5f4ce 100644 --- a/build-aux/build-self.scm +++ b/build-aux/build-self.scm @@ -17,9 +17,11 @@ ;;; 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)) @@ -29,51 +31,105 @@ ;;; 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: -;; Use our very own Guix modules. -(eval-when (compile load eval) + +;; 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." (and=> (assoc-ref (current-source-location) 'filename) (lambda (file) - (let ((dir (string-append (dirname file) "/.."))) - (set! %load-path (cons dir %load-path)))))) + (string-append (dirname file) "/..")))) + (define (date-version-string) "Return the current date and hour in UTC timezone, for use as a poor person's version identifier." - ;; XXX: Last resort when the Git commit id is missing. + ;; XXX: Replace with a Git commit id. (date->string (current-date 0) "~Y~m~d.~H")) -(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))))) +(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")))))) ;; The procedure below is our return value. (define* (build source @@ -82,29 +138,131 @@ Guix." #:rest rest) "Return a derivation that unpacks SOURCE into STORE and compiles Scheme files." - ;; 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)))) + ;; 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))) ;; 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 |