;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 Federico Beffa <beffa@fbengineering.ch>
;;;
;;; 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 packages chez)
  #:use-module (gnu packages)
  #:use-module ((guix licenses)
                #:select (gpl2+ lgpl2.0+ lgpl2.1+ asl2.0 bsd-3 expat
                          public-domain))
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix utils)
  #:use-module (guix build-system gnu)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages ghostscript)
  #:use-module (gnu packages netpbm)
  #:use-module (gnu packages tex)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages image)
  #:use-module (gnu packages xorg)
  #:use-module (ice-9 match))

(define nanopass
  (let ((version "1.9"))
    (origin
      (method url-fetch)
      (uri (string-append
            "https://github.com/nanopass/nanopass-framework-scheme/archive"
            "/v" version ".tar.gz"))
      (sha256 (base32 "11pwyy4jiwhcl2am3a4ciczacjbjkyvdizqzdglb3l1hj2gj6nv2"))
      (file-name (string-append "nanopass-" version ".tar.gz")))))

(define stex
  (let ((version "1.2.1"))
    (origin
      (method url-fetch)
      (uri (string-append
            "https://github.com/dybvig/stex/archive"
            "/v" version ".tar.gz"))
      (sha256 (base32 "03pl3f668h24dn51vccr1sj5lsba9zq3j37bnxjvdadcdaj4qy5z"))
      (file-name (string-append "stex-" version ".tar.gz")))))

(define-public chez-scheme
  (package
    (name "chez-scheme")
    (version "9.4")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://github.com/cisco/ChezScheme/archive/"
                           "v" version ".tar.gz"))
       (sha256
        (base32 "0lprmpsjg2plc6ykgkz482zyvhkzv6gd0vnar71ph21h6zknyklz"))
       (file-name (string-append "chez-scheme-" version ".tar.gz"))))
    (build-system gnu-build-system)
    (inputs
     `(("ncurses" ,ncurses)
       ("libx11" ,libx11)
       ("xorg-rgb" ,xorg-rgb)
       ("nanopass" ,nanopass)
       ("zlib" ,zlib)
       ("stex" ,stex)))
    (native-inputs
     `(("texlive" ,texlive)
       ("ghostscript" ,ghostscript-gs)
       ("netpbm" ,netpbm)))
    (native-search-paths
     (list (search-path-specification
            (variable "CHEZSCHEMELIBDIRS")
            (files (list (string-append "lib/csv" version "-site"))))))
    (outputs '("out" "doc"))
    (arguments
     `(#:modules ((guix build gnu-build-system)
                  (guix build utils)
                  (ice-9 match))
       #:test-target "test"
       #:configure-flags
       (list ,(match (or (%current-target-system) (%current-system))
                ("x86_64-linux" '(list "--machine=ta6le"))
                ("i686-linux" '(list "--machine=ti3le"))
                ;; FIXME: Some people succeeded in cross-compiling to
                ;; ARM. https://github.com/cisco/ChezScheme/issues/13
                (_
                 '())))
       #:phases
       (modify-phases %standard-phases
         ;; Adapt the custom 'configure' script.
         (replace 'configure
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let ((out (assoc-ref outputs "out"))
                   (nanopass (assoc-ref inputs "nanopass"))
                   (stex (assoc-ref inputs "stex"))
                   (zlib (assoc-ref inputs "zlib"))
                   (unpack (assoc-ref %standard-phases 'unpack))
                   (patch-source-shebangs
                    (assoc-ref %standard-phases 'patch-source-shebangs)))
               (map (match-lambda
                      ((src orig-name new-name)
                       (with-directory-excursion "."
                         (apply unpack (list #:source src))
                         (apply patch-source-shebangs (list #:source src)))
                       (delete-file-recursively new-name)
                       (system* "mv" orig-name new-name)))
                    `((,nanopass "nanopass-framework-scheme-1.9" "nanopass")
                      (,stex "stex-1.2.1" "stex")))
               ;; The Makefile wants to download and compile "zlib".  We patch
               ;; it to use the one from our 'zlib' package.
               (substitute* "configure"
                 (("rmdir zlib .*$") "echo \"using system zlib\"\n"))
               (substitute* (find-files "./c" "Mf-[a-zA-Z0-9.]+")
                 (("\\$\\{Kernel\\}: \\$\\{kernelobj\\} \\.\\./zlib/libz\\.a")
                  "${Kernel}: ${kernelobj}")
                 (("ld ([-a-zA-Z0-9_${} ]+) \\.\\./zlib/libz\\.a" all args)
                  (string-append "ld " args " " zlib "/lib/libz.a"))
                 (("\\(cd \\.\\./zlib; ([-a-zA-Z0-9=./ ]+))")
                  (which "true")))
               (substitute* (find-files "mats" "Mf-.*")
                 (("^[[:space:]]+(cc ) *") "\tgcc "))
               (substitute*
                   (find-files "." (string-append
                                    "("
                                    "Mf-[a-zA-Z0-9.]+"
                                    "|Makefile[a-zA-Z0-9.]*"
                                    "|checkin"
                                    "|stex\\.stex"
                                    "|newrelease"
                                    "|workarea"
                                    ;;"|[a-zA-Z0-9.]+\\.ms" ; guile can't read
                                    ")"))
                 (("/bin/rm") (which "rm"))
                 (("/bin/ln") (which "ln"))
                 (("/bin/cp") (which "cp")))
               (substitute* "makefiles/installsh"
                 (("/bin/true") (which "true")))
               (substitute* "stex/Makefile"
                 (("PREFIX=/usr") (string-append "PREFIX=" out)))
               (zero? (system* "./configure" "--threads"
                               (string-append "--installprefix=" out))))))
         ;; Installation of the documentation requires a running "chez".
         (add-after 'install 'install-doc
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let ((bin (string-append (assoc-ref outputs "out") "/bin"))
                   (doc (string-append (assoc-ref outputs "doc")
                                       "/share/doc/" ,name "-" ,version)))
               (setenv "HOME" (getcwd))
               (setenv "PATH" (string-append (getenv "PATH") ":" bin))
               (with-directory-excursion "stex"
                 (system* "make" (string-append "BIN=" bin)))
               (system* "make" "docs")
               (with-directory-excursion "csug"
                 (substitute* "Makefile"
                   (("/tmp/csug9") doc))
                 (system* "make" "install")
                 (install-file "csug.pdf" doc))
               (with-directory-excursion "release_notes"
                 (install-file "release_notes.pdf" doc))
               #t)))
         ;; The binary file name is called "scheme" as the one from MIT/GNU
         ;; Scheme.  We add a symlink to use in case both are installed.
         (add-after 'install 'install-symlink
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin"))
                    (lib (string-append out "/lib"))
                    (name "chez-scheme"))
               (symlink (string-append bin "/scheme")
                        (string-append bin "/" name))
               (map (lambda (file)
                      (symlink file (string-append (dirname file)
                                                   "/" name ".boot")))
                    (find-files lib "scheme.boot"))
               #t))))))
    ;; According to the documentation MIPS is not supported.
    (supported-systems (delete "mips64el-linux" %supported-systems))
    (home-page "http://www.scheme.com")
    (synopsis "R6RS Scheme compiler and run-time")
    (description
     "Chez Scheme is a compiler and run-time system for the language of the
Revised^6 Report on Scheme (R6RS), with numerous extensions.  The compiler
generates native code for each target processor, with support for x86, x86_64,
and 32-bit PowerPC architectures.")
    (license asl2.0)))

(define-public chez-srfi
  (package
    (name "chez-srfi")
    (version "1.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "https://github.com/fedeinthemix/chez-srfi/archive"
             "/v" version ".tar.gz"))
       (sha256
        (base32 "17i4wly7bcr5kb5hf04ljpbvv4r5hsr9xsmw650fj43z9jr303gs"))
       (file-name (string-append name "-" version ".tar.gz"))))
    (build-system gnu-build-system)
    (native-inputs
     `(("chez-scheme" ,chez-scheme)))
    (arguments
     `(#:make-flags (let ((out (assoc-ref %outputs "out")))
                      (list (string-append "PREFIX=" out)))
       #:test-target "test"
       #:phases (modify-phases %standard-phases
                  (delete 'configure))))
    (home-page "https://github.com/fedeinthemix/chez-srfi")
    (synopsis "SRFI libraries for Chez Scheme")
    (description
     "This package provides a collection of SRFI libraries for Chez Scheme.")
    (license expat)))

(define-public chez-web
  (let ((commit "5fd177fe53f31f466bf88720d03c95a3711a8bea")
        (revision "1"))
    (package
      (name "chez-web")
      ;; release 2.0 is different and doesn't work.
      (version (string-append "2.0-" revision "."
                              (string-take commit 7)))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/arcfide/ChezWEB.git")
               (commit commit)))
         (file-name (string-append name "-" version "-checkout"))
         (sha256
          (base32 "1dq25qygyncbfq4kwwqqgyyakfqjwhp5q23vrf3bff1p66nyfl3b"))))
      (build-system gnu-build-system)
      (native-inputs
       `(("chez-scheme" ,chez-scheme)
         ("texlive" ,texlive)))
      (arguments
       `(#:make-flags (list (string-append "PREFIX=" %output)
                            (string-append "DOCDIR=" %output "/share/doc/"
                                           ,name "-" ,version)
                            (string-append "LIBDIR=" %output "/lib/chezweb")
                            (string-append "TEXDIR=" %output "/share/texmf-local"))
                      #:tests? #f        ; no tests
                      #:phases
                      (modify-phases %standard-phases
                        (replace 'configure
                          (lambda* _
                            (copy-file "config.mk.template" "config.mk")
                            (substitute* "tangleit"
                              (("\\./cheztangle\\.ss" all)
                               (string-append "chez-scheme --program " all)))
                            (substitute* "weaveit"
                              (("mpost chezweb\\.mp")
                               "mpost --tex=tex chezweb.mp")
                              (("\\./chezweave" all)
                               (string-append "chez-scheme --program " all)))
                            (substitute* "installit"
                              (("-g \\$GROUP -o \\$OWNER") "")))))))
      (home-page "https://github.com/arcfide/ChezWEB")
      (synopsis "Hygienic Literate Programming for Chez Scheme")
      (description "ChezWEB is a system for doing Knuthian style WEB
programming in Scheme.")
      (license expat))))

(define-public chez-sockets
  (let ((commit "bce96881c06bd69a6757a6bff139744153924140")
        (revision "1"))
    (package
      (name "chez-sockets")
      (version (string-append "0.0-" revision "."
                              (string-take commit 7)))
      (source
       (origin
         (method git-fetch)
         (uri (git-reference
               (url "https://github.com/arcfide/chez-sockets.git")
               (commit commit)))
         (file-name (string-append name "-" version "-checkout"))
         (sha256
          (base32 "1n5fbwwz51fdzvjackgmnsgh363g9inyxv7kmzi0469cwavwcx5m"))))
      (build-system gnu-build-system)
      (native-inputs
       `(("chez-scheme" ,chez-scheme)
         ("chez-web" ,chez-web)
         ("texlive" ,texlive)))
      (arguments
       `(#:tests? #f              ; no tests
         #:phases
         (modify-phases %standard-phases
           (replace 'configure
             (lambda* (#:key outputs inputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (chez-web (assoc-ref inputs "chez-web"))
                      (chez (assoc-ref inputs "chez-scheme"))
                      (chez-h (dirname (car (find-files chez "scheme\\.h")))))
                 (substitute* "Makefile"
                   (("(SCHEMEH=).*$" all var)
                    (string-append var chez-h)))
                 #t)))
           (add-before 'build 'tangle
             (lambda _
               ;; just using "make" tries to build the .c files before
               ;; they are created.
               (and (zero? (system* "make" "sockets"))
                    (zero? (system* "make")))))
           (replace 'build
             (lambda* (#:key outputs inputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (chez-site (string-append out "/lib/csv"
                                                ,(package-version chez-scheme)
                                                "-site/arcfide")))
                 ;; make sure Chez Scheme can find the shared libraries.
                 (substitute* "sockets.ss"
                   (("(load-shared-object) \"(socket-ffi-values\\.[sd][oy].*)\""
                     all cmd so)
                    (string-append cmd " \"" chez-site "/" so "\""))
                   (("sockets-stub\\.[sd][oy].*" all)
                    (string-append chez-site "/" all)))
                 ;; to compile chez-sockets, the .so files must be
                 ;; installed (because of the absolute path we
                 ;; inserted above).
                 (for-each (lambda (f d) (install-file f d))
                           '("socket-ffi-values.so" "sockets-stub.so")
                           (list chez-site chez-site))
                 (zero? (system "echo '(compile-file \"sockets.sls\")' | scheme -q")))))
           (replace 'install
             (lambda* (#:key outputs inputs #:allow-other-keys)
               (let* ((out (assoc-ref outputs "out"))
                      (lib (string-append out "/lib/chez-sockets"))
                      (doc (string-append out "/share/doc/" ,name "-" ,version))
                      (chez-site (string-append out "/lib/csv"
                                                ,(package-version chez-scheme)
                                                "-site/arcfide")))
                 (for-each (lambda (f d) (install-file f d))
                           '("sockets.pdf" "sockets.so")
                           (list doc chez-site))
                 #t))))))
      (home-page "https://github.com/arcfide/chez-sockets")
      (synopsis "Extensible sockets library for Chez Scheme")
      (description "Chez-sockets is an extensible sockets library for
Chez Scheme.")
      (license expat))))

;; Help function for Chez Scheme to add the current path to
;; CHEZSCHEMELIBDIRS.
(define chez-configure
  '(lambda _
     (let ((chez-env (getenv "CHEZSCHEMELIBDIRS")))
       (setenv "CHEZSCHEMELIBDIRS"
               (if chez-env
                   (string-append ".:" chez-env)
                   "."))
       #t)))

;; Help function to define make flags for some Chez Scheme custom make
;; files.
(define (chez-make-flags name version)
  `(let ((out (assoc-ref %outputs "out")))
     (list (string-append "PREFIX=" out)
           (string-append "DOCDIR=" out "/share/doc/"
                          ,name "-" ,version))))

(define-public chez-matchable
  (package
    (name "chez-matchable")
    (version "20160306")
    (home-page "https://github.com/fedeinthemix/chez-matchable")
    (source
     (origin
       (method url-fetch)
       (uri (string-append home-page "/archive" "/v" version ".tar.gz"))
       (sha256
        (base32 "0cl4vc6487pikjq159pj4n5ghyaax31nywb5n4yn1682h3ir1hs0"))
       (file-name (string-append name "-" version ".tar.gz"))))
    (build-system gnu-build-system)
    (inputs
     `(("chez-srfi" ,chez-srfi))) ; for tests
    (native-inputs
     `(("chez-scheme" ,chez-scheme)))
    (arguments
     `(#:make-flags ,(chez-make-flags name version)
       #:test-target "test"
       #:phases (modify-phases %standard-phases
                  (replace 'configure ,chez-configure))))
    (synopsis "Portable hygienic pattern matcher for Scheme")
    (description "This package provides a superset of the popular Scheme
@code{match} package by Andrew Wright, written in fully portable
@code{syntax-rules} and thus preserving hygiene.")
    (license public-domain)))

(define-public chez-irregex
  (package
    (name "chez-irregex")
    (version "0.9.4")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "https://github.com/fedeinthemix/chez-irregex/archive"
             "/v" version ".tar.gz"))
       (sha256
        (base32 "0ywy5syaw549a58viz68dmgnv756ic705rcnlqxgjq27lnaim53b"))
       (file-name (string-append name "-" version ".tar.gz"))))
    (build-system gnu-build-system)
    (inputs
     `(("chez-matchable" ,chez-matchable))) ; for tests
    (propagated-inputs
     `(("chez-srfi" ,chez-srfi))) ; for irregex-utils
    (native-inputs
     `(("chez-scheme" ,chez-scheme)))
    (arguments
     `(#:make-flags ,(chez-make-flags name version)
       #:test-target "test"
       #:phases (modify-phases %standard-phases
                  (replace 'configure ,chez-configure))))
    (home-page "https://github.com/fedeinthemix/chez-irregex")
    (synopsis "Portable regular expression library for Scheme")
    (description "This package provides a portable and efficient
R[4567]RS implementation of regular expressions, supporting both POSIX
syntax with various (irregular) PCRE extensions, as well as SCSH's SRE
syntax, with various aliases for commonly used patterns.")
    (license bsd-3)))