gnu/build/cross-toolchain.scm


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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015, 2016, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2014, 2015, 2018 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2016 Manolis Fragkiskos Ragkousis <manolis837@gmail.com>
;;; Copyright © 2019 Marius Bakke <mbakke@fastmail.com>
;;; Copyright © 2019 Carl Dong <contact@carldong.me>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu build cross-toolchain)
  #:use-module (guix build utils)
  #:use-module (guix build gnu-build-system)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-26)
  #:use-module (ice-9 match)
  #:use-module (ice-9 ftw)
  #:export (cross-gcc-build-phases))

;;; Commentary:
;;;
;;; This module provides tools to build a cross-compiler.
;;;
;;; Code:

(define %gcc-include-paths
  ;; Environment variables for header search paths.
  ;; Note: See <http://bugs.gnu.org/22186> for why not 'CPATH'.
  '("C_INCLUDE_PATH"
    "CPLUS_INCLUDE_PATH"
    "OBJC_INCLUDE_PATH"
    "OBJCPLUS_INCLUDE_PATH"))

(define %gcc-cross-include-paths
  ;; Search path for target headers when cross-compiling.
  (map (cut string-append "CROSS_" <>) %gcc-include-paths))

(define* (make-cross-binutils-visible #:key outputs inputs target
                                      #:allow-other-keys)
  "Create symlinks for 'as', 'nm', and 'ld' in the \"out\" output, under
libexec/gcc, so that the cross-GCC can find them."
  (let* ((out      (assoc-ref outputs "out"))
         (libexec  (string-append out "/libexec/gcc/" target))
         (binutils (string-append (assoc-ref inputs "binutils-cross")
                                  "/bin/" target "-"))
         (wrapper  (string-append (assoc-ref inputs "ld-wrapper-cross")
                                  "/bin/" target "-ld")))
    (for-each (lambda (file)
                (symlink (string-append binutils file)
                         (string-append libexec "/" file)))
              '("as" "nm"))
    (symlink wrapper (string-append libexec "/ld"))
    #t))

(define* (set-cross-path #:key inputs #:allow-other-keys)
  "Add the cross kernel headers to CROSS_CPATH, and remove them from
C_INCLUDE_PATH et al."
  (match (assoc-ref inputs "libc")
    ((? string? libc)
     (let ((kernel (assoc-ref inputs "xkernel-headers")))
       (define (cross? x)
         ;; Return #t if X is a cross-libc or cross Linux.
         (or (string-prefix? libc x)
             (string-prefix? kernel x)))

       (let ((cpath (string-append libc "/include"
                                   ":" kernel "/include")))
         (for-each (cut setenv <> cpath)
                   %gcc-cross-include-paths))

       (setenv "CROSS_LIBRARY_PATH"
               (string-append libc "/lib:" kernel "/lib")) ;for Hurd's libihash

       (for-each (lambda (var)
                   (and=> (getenv var)
                          (lambda (value)
                            (let* ((path (search-path-as-string->list value))
                                   (native-path (list->search-path-as-string
                                                 (remove cross? path) ":")))
                              (setenv var native-path)))))
                 (cons "LIBRARY_PATH" %gcc-include-paths))
       #t))
    (#f
     ;; We're building the sans-libc cross-compiler, so nothing to do.
     #t)))

(define* (set-cross-path/mingw #:key inputs target #:allow-other-keys)
  "Add the cross MinGW headers to CROSS_C_*_INCLUDE_PATH, and remove them from
C_*INCLUDE_PATH."
  (let ((libc (assoc-ref inputs "libc"))
        (gcc (assoc-ref inputs "gcc")))
    (define (cross? x)
      (and libc (string-prefix? libc x)))

    (define (unpacked-mingw-dir)
      (match (scandir "." (lambda (name)
                            (string-contains name "mingw-w64")))
        ((mingw-dir)
         (string-append
          (getcwd) "/" mingw-dir "/mingw-w64-headers"))))

    (if libc
        (let ((cpath (string-append libc "/include"
                                    ":" libc "/" target "/include")))
          (for-each (cut setenv <> cpath)
                    %gcc-cross-include-paths))

        ;; libc is false, so we are building xgcc-sans-libc.
        ;; Add essential headers from mingw-w64.
        (let ((mingw-source (assoc-ref inputs "mingw-source")))
          (invoke "tar" "xvf" mingw-source)
          (let ((mingw-headers (unpacked-mingw-dir)))
            ;; We need _mingw.h which will gets built from _mingw.h.in by
            ;; mingw-w64's configure.  We cannot configure mingw-w64 until we
            ;; have xgcc-sans-libc; substitute to the rescue.
            (copy-file (string-append mingw-headers "/crt/_mingw.h.in")
                       (string-append mingw-headers "/crt/_mingw.h"))

            (substitute* (string-append mingw-headers "/crt/_mingw.h")
              (("@MINGW_HAS_SECURE_API@")
               "#define MINGW_HAS_SECURE_API 1")
              (("@DEFAULT_WIN32_WINNT@")
               "0x502")
              (("@DEFAULT_MSVCRT_VERSION@")
               "0x700"))

            (let ((cpath (string-append mingw-headers "/include"
                                        ":" mingw-headers "/crt"
                                        ":" mingw-headers
                                        "/defaults/include")))
              (for-each (cut setenv <> cpath)
                        (cons "CROSS_LIBRARY_PATH"
                              %gcc-cross-include-paths))))))

    (when libc
      (setenv "CROSS_LIBRARY_PATH"
              (string-append libc "/lib"
                             ":" libc "/" target "/lib")))

    (setenv "CPP" (string-append gcc "/bin/cpp"))
    (for-each (lambda (var)
                (and=> (getenv var)
                       (lambda (value)
                         (let* ((path (search-path-as-string->list
                                       value))
                                (native-path (list->search-path-as-string
                                              (remove cross? path) ":")))
                           (setenv var native-path)))))
              (cons "LIBRARY_PATH" %gcc-include-paths))
    #t))

(define (install-strip . _)
  "Install a stripped GCC."
  ;; Unlike our 'strip' phase, this will do the right thing for
  ;; cross-compilers.
  (invoke "make" "install-strip"))

(define* (cross-gcc-build-phases target
                                 #:optional (phases %standard-phases))
  "Modify PHASES to include everything needed to build a cross-GCC for TARGET,
a target triplet."
  (modify-phases phases
    (add-before 'configure 'set-cross-path
      ;; This mingw32 target checking logic should match that of target-mingw?
      ;; in (guix utils), but (guix utils) is too large too copy over to the
      ;; build side entirely and for now we have no way to select variables to
      ;; copy over. See (gnu packages cross-base) for more details.
      (if (string-suffix? "-mingw32" target)
          (cut set-cross-path/mingw #:target target <...>)
          set-cross-path))
    (add-after 'install 'make-cross-binutils-visible
      (cut make-cross-binutils-visible #:target target <...>))
    (replace 'install install-strip)))

;;; cross-toolchain.scm ends here
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012-2024 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2017, 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2018, 2019 Clément Lassieur <clement@lassieur.org>
;;; Copyright © 2020 Julien Lepiller <julien@lepiller.eu>
;;; Copyright © 2020, 2021 Mathieu Othacehe <othacehe@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu ci)
  #:use-module (guix build-system channel)
  #:use-module (guix config)
  #:autoload   (guix describe) (package-channels)
  #:use-module (guix memoization)
  #:use-module (guix store)
  #:use-module (guix profiles)
  #:use-module (guix packages)
  #:autoload   (guix transformations) (tunable-package? tuned-package)
  #:use-module (guix channels)
  #:use-module (guix config)
  #:use-module (guix derivations)
  #:use-module (guix monads)
  #:use-module (guix gexp)
  #:use-module (guix ui)
  #:use-module ((guix licenses)
                #:select (gpl3+ license? license-name))
  #:use-module ((guix utils) #:select (%current-system))
  #:use-module ((guix scripts system) #:select (read-operating-system))
  #:use-module ((guix scripts pack)
                #:select (self-contained-tarball))
  #:use-module (gnu bootloader)
  #:use-module (gnu bootloader u-boot)
  #:use-module (gnu compression)
  #:use-module (gnu image)
  #:use-module (gnu packages)
  #:use-module (gnu packages gcc)
  #:use-module (gnu packages gdb)
  #:use-module (gnu packages base)
  #:use-module (gnu packages gawk)
  #:use-module (gnu packages guile)
  #:use-module (gnu packages gettext)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages multiprecision)
  #:use-module (gnu packages make-bootstrap)
  #:use-module (gnu packages package-management)
  #:use-module (guix platform)
  #:use-module (gnu system)
  #:use-module (gnu system image)
  #:use-module (gnu system vm)
  #:use-module (gnu system install)
  #:use-module (gnu system images hurd)
  #:use-module (gnu system images novena)
  #:use-module (gnu system images pine64)
  #:use-module (gnu system images pinebook-pro)
  #:use-module (gnu system images visionfive2)
  #:use-module (gnu tests)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-26)
  #:use-module (ice-9 match)
  #:export (derivation->job
            image->job

            %core-packages

            arguments->systems
            cuirass-jobs))

;;; Commentary:
;;;
;;; This file defines build jobs for Cuirass.
;;;
;;; Code:

(define* (derivation->job name drv
                          #:key
                          (max-silent-time 3600)
                          (timeout (* 5 3600)))
  "Return a Cuirass job called NAME and describing DRV.

MAX-SILENT-TIME and TIMEOUT are build options passed to the daemon when
building the derivation."
  `((#:job-name . ,name)
    (#:derivation . ,(derivation-file-name drv))
    (#:inputs . ,(map (compose derivation-file-name
                               derivation-input-derivation)
                      (derivation-inputs drv)))
    (#:outputs . ,(filter-map
                   (lambda (res)
                     (match res
                       ((name . path)
                        `(,name . ,path))))
                   (derivation->output-paths drv)))
    (#:nix-name . ,(derivation-name drv))
    (#:system . ,(derivation-system drv))
    (#:max-silent-time . ,max-silent-time)
    (#:timeout . ,timeout)))

(define* (package-job store job-name package system
                      #:key cross? target (suffix ""))
  "Return a job called JOB-NAME that builds PACKAGE on SYSTEM."
  (let ((job-name (string-append job-name "." system suffix)))
    (parameterize ((%graft? #f))
      (let* ((drv (if cross?
                      (package-cross-derivation store package target system
                                                #:graft? #f)
                      (package-derivation store package system
                                          #:graft? #f)))
             (max-silent-time (or (assoc-ref (package-properties package)
                                             'max-silent-time)
                                  3600))
             (timeout (or (assoc-ref (package-properties package)
                                     'timeout)
                          72000)))
        (derivation->job job-name drv
                         #:max-silent-time max-silent-time
                         #:timeout timeout)))))

(define (package-cross-job store job-name package target system)
  "Return a job called TARGET.JOB-NAME that cross-builds PACKAGE for TARGET on
SYSTEM."
  (let ((name (string-append target "." job-name)))
    (package-job store name package system
                 #:cross? #t
                 #:target target)))

(define %core-packages
  ;; Note: Don't put the '-final' package variants because (1) that's
  ;; implicit, and (2) they cannot be cross-built (due to the explicit input
  ;; chain.)
  (list gcc-10 gcc-11 gcc-12 glibc binutils gdb-minimal
        gmp mpfr mpc coreutils findutils diffutils patch sed grep
        gawk gnu-gettext hello guile-2.2 guile-3.0 zlib gzip xz guix
        %bootstrap-binaries-tarball
        %binutils-bootstrap-tarball
        (%glibc-bootstrap-tarball)
        %gcc-bootstrap-tarball
        %guile-bootstrap-tarball
        %bootstrap-tarballs))

(define (commencement-packages system)
  "Return the list of bootstrap packages from the commencement module for
SYSTEM."
  ;; Only include packages supported on SYSTEM.  For example, the Mes
  ;; bootstrap graph is currently not supported on ARM so it should be
  ;; excluded.
  (filter (lambda (obj)
            (and (package? obj)
                 (supported-package? obj system)))
          (module-map (lambda (sym var)
                        (variable-ref var))
                      (resolve-module '(gnu packages commencement)))))

(define (packages-to-cross-build target)
  "Return the list of packages to cross-build for TARGET."
  ;; Don't cross-build the bootstrap tarballs for MinGW.
  (if (string-contains target "mingw")
      (drop-right %core-packages 6)
      %core-packages))

(define %bare-platform-triplets
  ;; Cross-compilation triplets of platforms that lack a proper user-space and
  ;; for which there's no point in trying to build regular packages.
  '("avr"
    "or1k-elf"
    "xtensa-ath9k-elf"))

(define %unsupported-platform-triplets
  ;; These systems are kept around for nostalgia or for tinkering, but regular
  ;; CI is disabled for them to reduce the load on CI infrastructure.
  '("mips64el-linux-gnu"
    "powerpc-linux-gnu"
    "powerpc64-linux-gnu"))

(define (cross-jobs store system)
  "Return a list of cross-compilation jobs for SYSTEM."
  (define (from-32-to-64? target)
    ;; Return true if SYSTEM is 32-bit and TARGET is 64-bit.  This hack
    ;; prevents known-to-fail cross-builds from i686-linux or armhf-linux to
    ;; mips64el-linux-gnuabi64.
    (and (or (string-prefix? "i686-" system)
             (string-prefix? "i586-" system)
             (string-prefix? "armhf-" system))
         (string-contains target "64")))    ;x86_64, mips64el, aarch64, etc.

  (define (same? target)
    ;; Return true if SYSTEM and TARGET are the same thing.  This is so we
    ;; don't try to cross-compile to 'mips64el-linux-gnu' from
    ;; 'mips64el-linux'.
    (or (and (string-contains target system)
             (not (string=? "x86_64-linux-gnux32" target)))
        (and (string-prefix? "armhf" system)    ;armhf-linux
             (string-prefix? "arm" target))))   ;arm-linux-gnueabihf

  (define (pointless? target)
    ;; Return #t if it makes no sense to cross-build to TARGET from SYSTEM.
    (or (member target %bare-platform-triplets)
        (member target %unsupported-platform-triplets)
        (match system
          ((or "x86_64-linux" "i686-linux")
           (if (string-contains target "mingw")
               (not (string=? "x86_64-linux" system))
               #f))
          (_
           ;; Don't try to cross-compile from non-Intel platforms: this isn't
           ;; very useful and these are often brittle configurations.
           #t))))

  (define (either proc1 proc2 proc3)
    (lambda (x)
      (or (proc1 x) (proc2 x) (proc3 x))))

  (append-map (lambda (target)
                (map (lambda (package)
                       (package-cross-job store (job-name package)
                                          package target system))
                     (packages-to-cross-build target)))
              (remove (either from-32-to-64? same? pointless?)
                      (targets))))

(define* (guix-jobs store systems #:key source commit)
  "Return a list of jobs for Guix itself."
  (define build
    (primitive-load (string-append source "/build-aux/build-self.scm")))

  (map
   (lambda (system)
     (let ((name (string->symbol
                  (string-append "guix." system)))
           (drv (run-with-store store
                  (build source #:version commit #:system system
                         #:pull-version 1
                         #:guile-version "2.2"))))
       (derivation->job name drv)))
   systems))

;; Architectures that are able to build or cross-build Guix System images.
;; This does not mean that other architectures are not supported, only that
;; they are often not fast enough to support Guix System images building.
(define %guix-system-supported-systems
  '("x86_64-linux" "i686-linux"))

(define %guix-system-images
  (list hurd-barebones-qcow2-image
        pine64-barebones-raw-image
        pinebook-pro-barebones-raw-image
        novena-barebones-raw-image
        visionfive2-barebones-raw-image))

(define (hours hours)
  (* 3600 hours))

(define* (image->job store image
                     #:key name system)
  "Return the job for IMAGE on SYSTEM.  If NAME is passed, use it as job name,
otherwise use the IMAGE name."
  (let* ((image-name (or name
                         (symbol->string (image-name image))))
         (name (string-append image-name "." system))
         (drv (run-with-store store
                (mbegin %store-monad
                  (set-guile-for-build (default-guile))
                  (lower-object (system-image image) system)))))
    (parameterize ((%graft? #f))
      (derivation->job name drv))))

(define* (image-jobs store system
                     #:key source commit)
  "Return a list of jobs that build images for SYSTEM."
  (define MiB
    (expt 2 20))

  (parameterize ((current-guix-package
                  (channel-source->package source #:commit commit)))
    (if (member system %guix-system-supported-systems)
        `(,(image->job store
                       (image
                        (inherit mbr-hybrid-disk-image)
                        (operating-system installation-os))
                       #:name "usb-image"
                       #:system system)
          ,(image->job
            store
            (image
             (inherit (image-with-label
                       iso9660-image
                       (string-append "GUIX_" system "_"
                                      (if (> (string-length %guix-version) 7)
                                          (substring %guix-version 0 7)
                                          %guix-version))))
             (operating-system installation-os))
            #:name "iso9660-image"
            #:system system)
          ;; Only cross-compile Guix System images from x86_64-linux for now.
          ,@(if (string=? system "x86_64-linux")
                (map (cut image->job store <>
                          #:system system)
                     %guix-system-images)
                '()))
        '())))

(define* (system-test-jobs store system
                           #:key source commit)
  "Return a list of jobs for the system tests."
  (define (->job test)
    (let ((name (string-append "test." (system-test-name test)
                               "." system))
          (drv (run-with-store store
                 (mbegin %store-monad
                   (set-current-system system)
                   (set-grafting #f)
                   (set-guile-for-build (default-guile))
                   (system-test-value test)))))

      (derivation->job name drv)))

  (if (member system %guix-system-supported-systems)
      ;; Override the value of 'current-guix' used by system tests.  Using a
      ;; channel instance makes tests that rely on 'current-guix' less
      ;; expensive.  It also makes sure we get a valid Guix package when this
      ;; code is not running from a checkout.
      (parameterize ((current-guix-package
                      (channel-source->package source #:commit commit)))
        (map ->job (all-system-tests)))
      '()))

(define (tarball-jobs store system)
  "Return jobs to build the self-contained Guix binary tarball."
  (define (->job name drv)
    (let ((name (string-append name "." system)))
      (parameterize ((%graft? #f))
        (derivation->job name drv))))

  ;; XXX: Add a job for the stable Guix?
  (list
   (->job "binary-tarball"
          (run-with-store store
            (mbegin %store-monad
              (set-guile-for-build (default-guile))
              (>>= (profile-derivation (packages->manifest (list guix)))
                   (lambda (profile)
                     (self-contained-tarball "guix-binary" profile
                                             #:profile-name "current-guix"
                                             #:localstatedir? #t
                                             #:compressor
                                             (lookup-compressor "xz")))))
            #:system system))))

(define job-name
  ;; Return the name of a package's job.
  package-name)

(define base-packages
  (mlambda (system)
    "Return the set of packages considered to be part of the base for SYSTEM."
    (delete-duplicates
     (append-map (match-lambda
                   ((_ package _ ...)
                    (match (package-transitive-inputs package)
                      (((_ inputs _ ...) ...)
                       inputs))))
                 (%final-inputs system)))))

(define package->job
  (lambda* (store package system #:key (suffix ""))
    "Return a job for PACKAGE on SYSTEM, or #f if this combination is not
valid.  Append SUFFIX to the job name."
    (cond ((member package (base-packages system))
           (package-job store (string-append "base." (job-name package))
                        package system #:suffix suffix))
          ((supported-package? package system)
           (let ((drv (package-derivation store package system
                                          #:graft? #f)))
             (and (substitutable-derivation? drv)
                  (package-job store (job-name package)
                               package system #:suffix suffix))))
          (else
           #f))))

(define %x86-64-micro-architectures
  ;; Micro-architectures for which we build tuned variants.
  '("haswell" "skylake" "x86-64-v2" "x86-64-v3" "x86-64-v4"))

(define (tuned-package-jobs store package system)
  "Return a list of jobs for PACKAGE tuned for SYSTEM's micro-architectures."
  (filter-map (lambda (micro-architecture)
                (define suffix
                  (string-append "." micro-architecture))

                (package->job store
                              (tuned-package package micro-architecture)
                              system
                              #:suffix suffix))
              (match system
                ("x86_64-linux" %x86-64-micro-architectures)
                (_ '()))))

(define (all-packages)
  "Return the list of packages to build."
  (define (adjust package result)
    (cond ((package-replacement package)
           ;; XXX: If PACKAGE and its replacement have the same name/version,
           ;; then both Cuirass jobs will have the same name, which
           ;; effectively means that the second one will be ignored.  Thus,
           ;; return the replacement first.
           (cons* (package-replacement package)   ;build both
                  package
                  result))
          ((package-superseded package)
           result)                                ;don't build it
          (else
           (cons package result))))

  (fold-packages adjust
                 (fold adjust '()                 ;include base packages
                       (match (%final-inputs)
                         (((labels packages _ ...) ...)
                          packages)))
                 #:select? (const #t)))           ;include hidden packages

(define (arguments->manifests arguments channels)
  "Return the list of manifests extracted from ARGUMENTS."
  (map (lambda (manifest)
         (any (lambda (checkout)
                (let ((path (in-vicinity checkout manifest)))
                  (and (file-exists? path)
                       path)))
              (map channel-url channels)))
       arguments))

(define (manifests->jobs store manifests systems)
  "Return the list of jobs for the entries in MANIFESTS, a list of file
names, for each one of SYSTEMS."
  (define (load-manifest manifest)
    (save-module-excursion
     (lambda ()
       (set-current-module (make-user-module '((guix profiles) (gnu))))
       (primitive-load manifest))))

  (define (manifest-entry-job-name entry)
    (string-append (manifest-entry-name entry) "-"
                   (manifest-entry-version entry)))

  (define (manifest-entry->job entry system)
    (let* ((obj (manifest-entry-item entry))
           (drv (parameterize ((%graft? #f))
                  (run-with-store store
                    (lower-object obj system)
                    #:system system)))
           (max-silent-time (or (and (package? obj)
                                     (assoc-ref (package-properties obj)
                                                'max-silent-time))
                                3600))
           (timeout (or (and (package? obj)
                             (assoc-ref (package-properties obj) 'timeout))
                        (* 5 3600))))
      (derivation->job (manifest-entry-job-name entry) drv
                       #:max-silent-time max-silent-time
                       #:timeout timeout)))

  (let ((entries (delete-duplicates
                  (append-map (compose manifest-entries load-manifest)
                              manifests)
                  manifest-entry=?)))
    (append-map (lambda (system)
                  (map (cut manifest-entry->job <> system) entries))
                systems)))

(define (arguments->systems arguments)
  "Return the systems list from ARGUMENTS."
  (match (assoc-ref arguments 'systems)
    (#f              %cuirass-supported-systems)
    ((lst ...)       lst)
    ((? string? str) (call-with-input-string str read))))


;;;
;;; Cuirass entry point.
;;;

(define (cuirass-jobs store arguments)
  "Register Cuirass jobs."
  (define subset
    (assoc-ref arguments 'subset))

  (define systems
    (arguments->systems arguments))

  (define channels
    (let ((channels (assq-ref arguments 'channels)))
      (map sexp->channel channels)))

  (define guix
    (find guix-channel? channels))

  (define commit
    (channel-commit guix))

  (define source
    (channel-url guix))

  ;; Turn off grafts.  Grafting is meant to happen on the user's machines.
  (parameterize ((%graft? #f))
    ;; Return one job for each package, except bootstrap packages.
    (append-map
     (lambda (system)
       (format (current-error-port)
               "evaluating for '~a' (heap size: ~a MiB)...~%"
               system
               (round
                (/ (assoc-ref (gc-stats) 'heap-size)
                   (expt 2. 20))))
       (invalidate-derivation-caches!)
       (match subset
         ('all
          ;; Build everything, including replacements.
          (let ((all (all-packages))
                (jobs (lambda (package)
                        (match (package->job store package system)
                          (#f '())
                          (main-job
                           (cons main-job
                                 (if (tunable-package? package)
                                     (tuned-package-jobs store package system)
                                     '())))))))
            (append
             (append-map jobs all)
             (cross-jobs store system))))
         ('core
          ;; Build core packages only.
          (append
           (map (lambda (package)
                  (package-job store (job-name package)
                               package system))
                (append (commencement-packages system) %core-packages))
           (cross-jobs store system)))
         ('guix
          ;; Build Guix modules only.
          (guix-jobs store systems
                     #:source source
                     #:commit commit))
         ('hello
          ;; Build hello package only.
          (let ((hello (specification->package "hello")))
            (list (package-job store (job-name hello)
                               hello system))))
         ('images
          ;; Build Guix System images only.
          (image-jobs store system
                      #:source source
                      #:commit commit))
         ('system-tests
          ;; Build Guix System tests only.
          (system-test-jobs store system
                            #:source source
                            #:commit commit))
         ('tarball
          ;; Build Guix tarball only.
          (tarball-jobs store system))
         (('custom . modules)
          ;; Build custom modules jobs only.
          (append-map
           (lambda (module)
             (let ((proc (module-ref
                          (resolve-interface module)
                          'cuirass-jobs)))
               (proc store arguments)))
           modules))
         (('channels . channels)
          ;; Build only the packages from CHANNELS.
          (let ((all (all-packages)))
            (filter-map
             (lambda (package)
               (any (lambda (channel)
                      (and (member (channel-name channel) channels)
                           (package->job store package system)))
                    (package-channels package)))
             all)))
         (('packages . rest)
          ;; Build selected list of packages only.
          (let ((packages (map specification->package rest)))
            (map (lambda (package)
                   (package-job store (job-name package)
                                package system))
                 packages)))
         (('manifests . rest)
          ;; Build packages in the list of manifests.
          (let ((manifests (arguments->manifests rest channels)))
            (manifests->jobs store manifests systems)))
         (else
          (error "unknown subset" subset))))
     systems)))