(use-modules ((guix licenses)
  #:prefix license:))
(use-modules
 (guix packages))
(use-modules
 (guix download))
(use-modules
 (guix utils))
(use-modules
 (guix git-download))
(use-modules
 (guix build-system gnu))
(use-modules
 (gnu packages))
(use-modules
 (gnu packages algebra))
(use-modules
 (gnu packages base))
(use-modules
 (gnu packages compression))
(use-modules
 (gnu packages elf))
(use-modules
 (gnu packages gcc))
(use-modules
 (gnu packages llvm))
(use-modules
 (gnu packages libevent))
(use-modules
 (gnu packages libunwind))
(use-modules
 (gnu packages maths))
(use-modules
 (gnu packages multiprecision)) ; mpfr)
(use-modules
 (gnu packages pcre))
(use-modules
 (gnu packages perl))
(use-modules
 (gnu packages pkg-config))
(use-modules
 (gnu packages python))
(use-modules
 (gnu packages python-xyz))
(use-modules
 (gnu packages textutils))
(use-modules
 (gnu packages tls))
(use-modules
 (gnu packages version-control))

(use-modules
 (gnu packages wget))

(use-modules
 (ice-9 match))

;; (define openblas-julia
;;   (package
;;     (inherit openblas)
;;     (name "openblas-julia")
;;     INTERFACE64=
;;     ))

;; This works *BUT* we need to apply a lot of patches. Compiling this
;; with julia applies the patches automatically

(define llvm-julia
  (package
    (inherit llvm-6)
    (name "llvm-julia")
    (source
     (origin
       (method url-fetch)
       (uri
     	(string-append
         "http://releases.llvm.org/6.0.1/llvm-6.0.1.src.tar.xz"))
       (sha256
     	(base32
	 "1qpls3vk85lydi5b4axl0809fv932qgsqgdgrk098567z4jc7mmn"))
       (patches '("./llvm-6.0-D44650.patch"
       		  "./llvm-6.0-DISABLE_ABI_CHECKS.patch"
       		  "./llvm-6.0-NVPTX-addrspaces.patch"
       		  "./llvm-6.0.0_D27296-libssp.patch"
       		  "./llvm-D27629-AArch64-large_model_6.0.1.patch"
       		  "./llvm-D34078-vectorize-fdiv.patch"
       		  "./llvm-D42262-jumpthreading-not-i1.patch"
       		  "./llvm-D44892-Perf-integration.patch"
       		  "./llvm-D46460.patch"
       		  "./llvm-D49832-SCEVPred.patch"
       		  "./llvm-D50010-VNCoercion-ni.patch"
       		  "./llvm-D50167-scev-umin.patch"
       		  "./llvm-OProfile-line-num.patch"
       		  "./llvm-PPC-addrspaces.patch"
       		  "./llvm-rL323946-LSRTy.patch"
       		  "./llvm-rL326967-aligned-load.patch"
       		  "./llvm-rL327898.patch"
       		  ))
       ))
    (arguments
     (substitute-keyword-arguments
	 (package-arguments llvm-6)
       ((#:configure-flags flags)
	'(list ;; Taken from NixOS. Only way I could get libLLVM-6.0.so
	  "-DCMAKE_BUILD_TYPE=Release"
	  "-DLLVM_INSTALL_UTILS=ON"
	  "-DLLVM_BUILD_TESTS=ON"
	  "-DLLVM_ENABLE_FFI=ON"
	  "-DLLVM_ENABLE_RTTI=ON"
	  ;; "-DLLVM_HOST_TRIPLE=${stdenv.hostPlatform.config}"
	  ;; "-DLLVM_DEFAULT_TARGET_TRIPLE=${stdenv.hostPlatform.config}"
	  "-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly"
	  "-DLLVM_ENABLE_DUMP=ON"
	  "-DLLVM_LINK_LLVM_DYLIB=ON")
	)))))

(define libuv-julia
  (let
      ((commit "2348256acf5759a544e5ca7935f638d2bc091d60"))
    (package
      (inherit libuv)
      (name "libuv-julia")
      (version commit)
      (source
       (origin
	 (method url-fetch)
	 (uri (string-append
	       "https://api.github.com/repos/JuliaLang/libuv/tarball/"
	       commit))
	 (sha256
	  (base32
	   "1363f4vqayfcv5zqg07qmzjff56yhad74k16c22ian45lram8mv8"))))
      (build-system gnu-build-system)
      (arguments
       (substitute-keyword-arguments
	   (package-arguments libuv)
	 ((#:phases phases)
	  `(modify-phases ,phases
	     (delete 'autogen)))))
      (home-page "https://github.com/JuliaLang/libuv"))))

(package
  (name "julia")
  (version "1.1.0")
  (source
   (origin
     (method url-fetch)
     (uri
      (string-append
       "https://github.com/JuliaLang/julia/releases/download/v"
       version "/julia-" version ".tar.gz"))
     (sha256
      (base32
       "1bd6c5gqd7f2i837ay8iqi8h36smhcg0lq7f8c2axxaw8x6rcfmx"))))
  (build-system gnu-build-system)
  (arguments
   `(#:test-target "test"
     #:modules
     ((ice-9 match)
      (guix build gnu-build-system)
      (guix build utils))
     ;; Do not strip binaries to keep support for full backtraces.
     ;; See https://github.com/JuliaLang/julia/issues/17831
     #:strip-binaries? #f

     ;; The DSOs use $ORIGIN to refer to each other, but (guix build
     ;; gremlin) doesn't support it yet, so skip this phase.
     #:validate-runpath? #f

     #:phases
     (modify-phases %standard-phases
       (delete 'configure)
       (add-after 'unpack 'prepare-deps
	 (lambda*
	     (#:key inputs #:allow-other-keys)
	   (mkdir "deps/srccache")
	   (copy-file
	    (assoc-ref inputs "dsfmt")
	    "deps/srccache/dsfmt-2.2.3.tar.gz")
	   (copy-file
	    (string-append
	     (assoc-ref inputs "virtualenv")
	     "/bin/virtualenv")
	    "julia-env")
	   (copy-file
	    (assoc-ref inputs "libwhich")
	    (string-append "deps/srccache/libwhich-"
			   "81e9723c0273d78493dc8c8ed570f68d9ce7e89e"
			   ".tar.gz"))
	   (copy-file (assoc-ref inputs "rmath")
		      "deps/srccache/Rmath-julia-0.1.tar.gz")
	   (copy-file
	    (assoc-ref inputs "objconv")
	    "deps/srccache/objconv.zip")
	   (copy-file
	    (assoc-ref inputs "suitesparse")
	    "deps/srccache/SuiteSparse-4.4.5.tar.gz")
	   ;; needed by libwhich
	   (setenv "LD_LIBRARY_PATH"
		   (string-join
		    (map (lambda (pkg)
			   (string-append (assoc-ref inputs pkg) "/lib"))
			 (list
			  "arpack-ng" "fftw" "gmp" "lapack"
			  "libgit2" "mpfr" "openblas" "openlibm"
			  "openspecfun" "pcre2"
			  ))
		    ":"))
	   
	   ;; (copy-file
	   ;;  (assoc-ref inputs "llvm")
	   ;;  "deps/srccache/llvm-6.0.0.src.tar.xz")
	   #t))
       ;; FIXME: Building the documentation requires Julia packages that
       ;; would be downloaded from the Internet.  We should build them in a
       ;; separate build phase.
       (add-after 'unpack 'disable-documentation
	 (lambda _
	   (substitute* "Makefile"
	     (("(install: .*) \\$\\(BUILDROOT\\)/doc/_build/html/en/index.html" _ line)
	      (string-append line "\n"))
	     (("src ui doc deps")
	      "src ui deps"))
	   #t))
       (add-before 'check 'set-home
	 ;; Some tests require a home directory to be set.
	 (lambda _
	   (setenv "HOME" "/tmp")
	   #t))
       (add-after 'unpack 'hardcode-soname-map
	 ;; ./src/runtime_ccall.cpp creates a map from library names to paths
	 ;; using the output of "/sbin/ldconfig -p".  Since ldconfig is not
	 ;; used in Guix, we patch runtime_ccall.cpp to contain a static map.
	 (lambda* (#:key inputs #:allow-other-keys)
	   (use-modules (ice-9 match))
	   (substitute* "src/runtime_ccall.cpp"
	     ;; Patch out invocations of '/sbin/ldconfig' to avoid getting
	     ;; error messages about missing '/sbin/ldconfig' on Guix System.
	     (("popen\\(.*ldconfig.*\\);")
	      "NULL;\n")
	     ;; Populate 'sonameMap'.
	     (("jl_read_sonames.*;")
	      (string-join
	       (map (match-lambda
		      ((input libname soname)
		       (string-append
			"sonameMap[\"" libname "\"] = "
			"\"" (assoc-ref inputs input) "/lib/" soname "\";")))
		    '(("libc"        "libc"           "libc.so.6")
		      ("pcre2"       "libpcre2-8"     "libpcre2-8.so")
		      ("mpfr"        "libmpfr"        "libmpfr.so")
		      ("openblas"    "libblas"        "libopenblas.so")
		      ("arpack-ng"   "libarpack"      "libarpack.so")
		      ("lapack"      "liblapack"      "liblapack.so")
		      ("libgit2"     "libgit2"        "libgit2.so")
		      ("gmp"         "libgmp"         "libgmp.so")
		      ;; ("openlibm"    "libopenlibm"    "libopenlibm.so")
		      ("openspecfun" "libopenspecfun" "libopenspecfun.so")
		      ("fftw"        "libfftw3"       "libfftw3_threads.so")
		      ("fftwf"       "libfftw3f"      "libfftw3f_threads.so"))))))
	   ;; FIXME: NIXO
	   ;; (substitute* "base/fft/FFTW.jl"
	   ;;   (("const libfftw = Base.libfftw_name")
	   ;;    (string-append "const libfftw = \""
	   ;;                   (assoc-ref inputs "fftw") "/lib/libfftw3_threads.so"
	   ;;                   "\""))
	   ;;   (("const libfftwf = Base.libfftwf_name")
	   ;;    (string-append "const libfftwf = \""
	   ;;                   (assoc-ref inputs "fftwf") "/lib/libfftw3f_threads.so"
	   ;;                   "\"")))
	   (substitute* "base/math.jl"
	     (("const libm = Base.libm_name")
	      (string-append "const libm = \""
			     (assoc-ref inputs "openlibm")
			     "/lib/libopenlibm.so"
			     "\""))
	     (("const openspecfun = \"libopenspecfun\"")
	      (string-append "const openspecfun = \""
			     (assoc-ref inputs "openspecfun")
			     "/lib/libopenspecfun.so"
			     "\"")))
	   ;; (substitute* "base/pcre.jl"
	   ;; 		   (("const PCRE_LIB = \"libpcre2-8\"")
	   ;; 		    (string-append "const PCRE_LIB = \""
	   ;; 				   (assoc-ref inputs "pcre2")
	   ;; 				   "/lib/libpcre2-8.so" "\"")))
	   #t))
       (add-before 'build 'fix-include-and-link-paths
	 (lambda*
	     (#:key inputs #:allow-other-keys)
	   ;; LIBUTF8PROC is a linker flag, not a build target.  It is
	   ;; included in the LIBFILES_* variable which is used as a
	   ;; collection of build targets and a list of libraries to link
	   ;; against.
	   (substitute* "src/flisp/Makefile"
	     (("\\$\\(BUILDDIR\\)/\\$\\(EXENAME\\): \\$\\(OBJS\\) \\$\\(LIBFILES_release\\)")
	      "$(BUILDDIR)/$(EXENAME): $(OBJS) $(LLT_release)")
	     (("\\$\\(BUILDDIR\\)/\\$\\(EXENAME\\)-debug: \\$\\(DOBJS\\) \\$\\(LIBFILES_debug\\)")
	      "$(BUILDDIR)/$(EXENAME)-debug: $(DOBJS) $(LLT_debug)"))
	   ;; The REPL must be linked with libuv.
	   (substitute* "ui/Makefile"
	     (("JLDFLAGS \\+= ")
	      (string-append "JLDFLAGS += "
			     (assoc-ref %build-inputs "libuv")
			     "/lib/libuv.so ")))
	   (substitute* "base/Makefile"
	     (("\\$\\(build_includedir\\)/uv/errno.h")
	      (string-append
	       (assoc-ref inputs "libuv")
	       "/include/uv/errno.h")))
	   #t))
       (add-before 'build 'replace-default-shell
	 (lambda _
	   (substitute* "base/client.jl"
	     (("/bin/sh")
	      (which "sh")))
	   #t))
       (add-after 'unpack 'hardcode-paths
	 (lambda _
	   (substitute* "stdlib/InteractiveUtils/src/InteractiveUtils.jl"
	     (("`which") (string-append "`" (which "which")))
	     (("`wget")  (string-append "`" (which "wget"))))
	   #t))
       (add-before 'check 'disable-broken-tests
	 (lambda _
	   (define (touch file-name)
	     (call-with-output-file file-name (const #t)))
	   ;; Don't know why FIXME
	   ;; (substitute* "stdlib/LibGit2/test/libgit2.jl"
	   ;;   (("!LibGit2.use_http_path(cfg, github_cred)")
	   ;;    "true")
	   ;;   (("LibGit2.use_http_path(cfg, mygit_cred)")
	   ;;     "true"))
	   (map (lambda (test)
		  (delete-file test)
		  (touch test))
		'("stdlib/Sockets/test/runtests.jl"
		  "stdlib/Distributed/test/runtests.jl"
		  "stdlib/LibGit2/test/libgit2.jl"
		  ))
	   
	   (substitute* "test/choosetests.jl"
	     ;; These tests fail, probably because some of the input
	     ;; binaries have been stripped and thus backtraces don't look
	     ;; as expected.
	     (("\"backtrace\",")
	      "")
	     (("\"cmdlineargs\",")
	      ""))
	   #t)))
     #:make-flags
     (list
      (string-append "prefix=" (assoc-ref %outputs "out"))
      (string-append "PREFIX=" (assoc-ref %outputs "out"))
      ;; Passing the MARCH flag is necessary to build binary substitutes for
      ;; the supported architectures.
      ,(match
	   (or
	    (%current-target-system)
	    (%current-system))
	 ("x86_64-linux" "MARCH=x86-64")
	 ("i686-linux" "MARCH=pentium4")
	 ("aarch64-linux" "MARCH=armv8-a")
	 ;; Prevent errors when querying this package on unsupported
	 ;; platforms, e.g. when running "guix package --search="
	 (_ "MARCH=UNSUPPORTED"))
      "CONFIG_SHELL=bash"   ;needed to build bundled libraries
      "USE_SYSTEM_DSFMT=0"  ;not packaged for Guix and upstream has no
					;build system for a shared library.
      "USE_SYSTEM_LAPACK=1"
      "USE_SYSTEM_BLAS=1"

      ;; TODO: What about building blas with 64 support?
      "USE_BLAS64=0"			;needed when USE_SYSTEM_BLAS=1
      "LIBBLAS=-lopenblas"
      "LIBBLASNAME=libopenblas"

      "USE_SYSTEM_FFTW=1"
      "LIBFFTWNAME=libfftw3"
      "LIBFFTWFNAME=libfftw3f"

      ;; TODO: Suitesparse does not install shared libraries, so we cannot
      ;; use the suitesparse package.
      ;; "USE_SYSTEM_SUITESPARSE=1"
      ;; (string-append "SUITESPARSE_INC=-I "
      ;;                (assoc-ref %build-inputs "suitesparse")
      ;;                "/include")

      "USE_GPL_LIBS=1"			;proudly
      "USE_SYSTEM_UTF8PROC=1"
      (string-append "UTF8PROC_INC="
		     (assoc-ref %build-inputs "utf8proc")
		     "/include")
      "USE_SYSTEM_LLVM=1"
      "LLVM_VER=6.0.1"

      ;; "LLVM_VER=6.0.0"
      "USE_LLVM_SHLIB=1"		; FIXME: fails when set to 1

      "USE_SYSTEM_LIBUNWIND=1"
      "USE_SYSTEM_LIBUV=1"
      (string-append "LIBUV="
		     (assoc-ref %build-inputs "libuv")
		     "/lib/libuv.so")
      (string-append "LIBUV_INC="
		     (assoc-ref %build-inputs "libuv")
		     "/include")
      "USE_SYSTEM_PATCHELF=1"
      "USE_SYSTEM_PCRE=1"
      "USE_SYSTEM_OPENLIBM=1"

      "USE_SYSTEM_GMP=1"
      "USE_SYSTEM_MPFR=1"
      "USE_SYSTEM_ARPACK=1"
      "USE_SYSTEM_LIBGIT2=1"
      "USE_SYSTEM_ZLIB=1"
      "USE_SYSTEM_OPENSPECFUN=1")))
  (inputs
   `( ("llvm" ,llvm-julia)
     ;; The bundled version is 3.3.0 so stick to that version.  With other
     ;; versions, we get test failures in 'linalg/arnoldi' as described in
     ;; <https://bugs.gnu.org/30282>.
     ("arpack-ng" ,arpack-ng-3.3.0)
     ("coreutils" ,coreutils)
					;for bindings to "mkdir" and the like
     ("lapack" ,lapack)
     ("openblas" ,openblas)
					;Julia does not build with Atlas
     ("libunwind" ,libunwind)
     ("openlibm" ,openlibm)
     ("openspecfun" ,openspecfun)
     ("libuv", libuv-julia)
     ("libgit2" ,libgit2)
     ("fftw" ,fftw)
     ("fftwf" ,fftwf)
     ("fortran" ,gfortran)
     ("pcre2" ,pcre2)
     ("utf8proc" ,utf8proc)
     ("mpfr" ,mpfr)
     ("wget" ,wget)
     ("which" ,which)
     ("zlib" ,zlib)
     ("gmp" ,gmp)
     ("virtualenv" ,python2-virtualenv)
     ;; FIXME: The following inputs are downloaded from upstream to allow us
     ;; to use the lightweight Julia release tarball.  Ideally, these inputs
     ;; would eventually be replaced with proper Guix packages.

     ;; TODO: run "make -f contrib/repackage_system_suitesparse4.make" to copy static lib
     ("rmath"
      ,(origin
	 (method url-fetch)
	 (uri "https://api.github.com/repos/JuliaLang/Rmath-julia/tarball/v0.1")
	 (sha256
	  (base32
	   "1qyps217175qhid46l8f5i1v8i82slgp23ia63x2hzxwfmx8617p"))))
     ("suitesparse"
      ,(origin
	 (method url-fetch)
	 (uri "http://faculty.cse.tamu.edu/davis/SuiteSparse/SuiteSparse-4.4.5.tar.gz")
	 (sha256
	  (base32
	   "1jcbxb8jx5wlcixzf6n5dca2rcfx6mlcms1k2rl5gp67ay3bix43"))))
     ("objconv"
      ,(origin
	 (method url-fetch)
	 ;; No versioned URL, see <https://www.agner.org/optimize/> for updates.
	 (uri "https://www.agner.org/optimize/objconv.zip")
	 (file-name "objconv-2018-10-07.zip")
	 (sha256
	  (base32
	   "0wp6ld9vk11f4nnkn56627zmlv9k5vafi99qa3yyn1pgcd61zcfs"))))
     ("libwhich"
      ,(origin
	 (method url-fetch)
	 (uri
	  (string-append
	   "https://api.github.com/repos/vtjnash/libwhich/tarball/"
	   "81e9723c0273d78493dc8c8ed570f68d9ce7e89e"))
	 (sha256
	  (base32
	   "1p7zg31kpmpbmh1znrk1xrbd074agx13b9q4dcw8n2zrwwdlbz3b"))))
     ;; ("llvm"
     ;;  ,(origin
     ;;     (method url-fetch)
     ;;     (uri
     ;; 	  (string-append
     ;;       "http://releases.llvm.org/6.0.0/llvm-6.0.0.src.tar.xz"))
     ;;     (sha256
     ;; 	  (base32
     ;; 	   "0224xvfg6h40y5lrbnb9qaq3grmdc5rg00xq03s1wxjfbf8krx8z"))))
     ;; ("cmake" ,cmake) 			;; required to build llvm
     ("dsfmt"
      ,(origin
	 (method url-fetch)
	 (uri
	  (string-append
	   "http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/"
	   "SFMT/dSFMT-src-2.2.3.tar.gz"))
	 (sha256
	  (base32
	   "03kaqbjbi6viz0n33dk5jlf6ayxqlsq4804n7kwkndiga9s4hd42"))))))
  (native-inputs
   `(("openssl" ,openssl)
     ("perl" ,perl)
     ("patchelf" ,patchelf)
     ("pkg-config" ,pkg-config)
     ("python" ,python-2)))
  ;; Julia is not officially released for ARM and MIPS.
  ;; See https://github.com/JuliaLang/julia/issues/10639
  (supported-systems
   '("i686-linux" "x86_64-linux" "aarch64-linux"))
  (home-page "https://julialang.org/")
  (synopsis "High-performance dynamic language for technical computing")
  (description
   "Julia is a high-level, high-performance dynamic programming language for
technical computing, with syntax that is familiar to users of other technical
computing environments.  It provides a sophisticated compiler, distributed
parallel execution, numerical accuracy, and an extensive mathematical function
library.")
  (license license:expat))