(use-modules ((guix licenses) #:select (bsd-3 gpl3+ psfl lgpl2.1+))
             (guix packages)
             (guix download)
             (guix git-download)
             (guix gexp)
             (guix build-system cmake)
             (guix build-system trivial)
             (guix build-system python)
             (guix build-system gnu)
             (gnu packages python)
             (gnu packages xml)
             (gnu packages tls)
             (gnu packages emacs)
             (gnu packages package-management)
             (gnu packages zip)
             (gnu packages swig)
             (gnu packages compression)
             (gnu packages guile))

(define libsolv
  (package
    (name "libsolv")
    (version "0.6.22")
    (source (origin
             (method url-fetch)
             (uri (string-append "https://github.com/openSUSE/libsolv/archive/"
                                 version ".tar.gz"))
             (file-name (string-append name "-" version ".tar.gz"))
             (modules '((guix build utils)))
             (sha256
              (base32
               "0zl7dlqmib05y5f2wkbz66n68bmqk2fxhvph1dfr071v7jnzc6gf"))
             (snippet
               '(substitute* '("bindings/python/CMakeLists.txt")
                  (("EXECUTE_PROCESS.*") "")
                  (("libsolv ") "libsolv python2.7 ")
                  ))))
    (build-system cmake-build-system)
    (inputs
     `(("expat" ,expat)
       ("zlib" ,zlib)
       ("python" ,python-2.7)
       ("swig" ,swig)))
    (arguments
     '(#:configure-flags
       (list (string-append "-DPYTHON_INSTALL_DIR="
                            (assoc-ref %outputs "out") "/lib/python2.7/site-packages")
             "-DENABLE_PYTHON=1"
             (string-append ; uses lib64 by default
               "-DLIB=lib")
             (string-append "-DCMAKE_INSTALL_RPATH="
                            (assoc-ref %outputs "out") "/lib"))))
                            ;(assoc-ref %outputs "out") "/lib:"
                            ;(assoc-ref %outputs "out") "/lib64"))))
    (home-page "https://github.com/openSUSE/libsolv")
    (synopsis "libsolv")
    (description "")
    (license bsd-3)))

(define pyguile
  (package
    (name "pyguile")
    (version "0.3.1")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                     (url "http://git.cbaines.net/pyguile")
                     (commit "e37142e8aaa903920d4f13a5ef66a352618e65c6")))
              (sha256
                (base32
                  "037w1bf58yn4kfy5jydd1jzfi7dpg0m2w8p1sd2wnr6py03hybwq"))))
    ;(source (origin
    ;         (method url-fetch)
    ;         (uri (string-append "https://github.com/cbaines/pyguile/archive/v"
    ;                             version ".tar.gz"))
    ;         (file-name (string-append name "-" version ".tar.gz"))
    ;         (modules '((guix build utils)))
    ;         (sha256
    ;          (base32
    ;           "0ds5pnm4dc0vyfa5wlyw9dvzl6dyiizh4q8s153byyn8jkiimb5c"))))
    (build-system cmake-build-system)
    (inputs
     `(("python" ,python-2.7)
       ("guile" ,guile-2.0)))
    (arguments
     '(;#:tests? #f ; no tests
       ;#:make-flags (list "CC=gcc"
       ;                   (string-append "PREFIX=" %output))
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)
         (delete 'check)
         (replace 'build
          (lambda* (#:key outputs #:allow-other-keys)
           ;(chdir "..")
           (display "CWD ")(display (getcwd))(display "\n")
           (let ((out (assoc-ref outputs "out")))
            (zero?
             (system* "make" "CC=gcc")))))
         (replace
          'install
          (lambda* (#:key outputs #:allow-other-keys)
            (let* ((out     (assoc-ref outputs "out"))
                   (guild (string-append (assoc-ref %build-inputs "guile")
                                         "/bin/guild"))
                   (scm-dir
                     (string-append out "/share/guile/site/2.0/"))
                   (scm-path
                     (string-append scm-dir "pyguile.scm"))
                   (lib-dir
                     (string-append out "/lib/"))
                   (lib-path
                     (string-append lib-dir "libpyguile.so")))
              (mkdir-p scm-dir)
              (mkdir-p lib-dir)
              (copy-file "pyguile.scm" scm-path)
              (copy-file "libpyguile.so" lib-path)
              (substitute* scm-path
                           (("libpyguile")
                            (string-append lib-dir "libpyguile")))
              (setenv "GUILE_AUTO_COMPILE" "0")
              (unless (zero?
                        (system* guild "compile" scm-path
                                  "-o" (string-append scm-dir "pyguile.go")))
                (error "failed to compile"))
              #t))))))
    (home-page "https://github.com/tddpirate/pyguile")
    (synopsis "pyguile")
    (description "")
    (license lgpl2.1+)))

(define python-packaging
  (package
    (name "python-packaging")
    (version "16.7")
    (source
      (origin
        (method url-fetch)
        (uri (string-append
               "https://pypi.python.org/packages/28/ad/4e6601d14b11bb300719a8bb6247f6ef5861467a692523c978a4e9e3981a/packaging-"
               version
               ".tar.gz"))
        (sha256
          (base32
            "07h18mrpqs0lv2x4fl43pqi0xj6hdrmrnm6v9q634yliagg6q91f"))))
    (build-system python-build-system)
    (inputs
      `(("python-setuptools" ,python-setuptools)))
    (propagated-inputs
     `(("python-pyparsing" ,python-pyparsing)
       ("python-six" ,python-six)))
    (home-page "https://github.com/pypa/packaging")
    (synopsis "Core utilities for Python packages")
    (description
      "Core utilities for Python packages")
    (license #f)))

(define python2-packaging
  (package-with-python2 python-packaging))

(define python-setuptools
  (package
    (name "python-setuptools")
    (version "20.10.1")
    (source
     (origin
      (method url-fetch)
      (uri "https://pypi.python.org/packages/d3/16/21cf5dc6974280197e42d57bf7d372380562ec69aef9bb796b5e2dbbed6e/setuptools-20.10.1.tar.gz")
      (sha256
       (base32
        "1pdm34rjixkdyp5j2yp774ri1da7ncqy8s34h4qxdl4yy22whn9y"))))
    (build-system python-build-system)
    ;; FIXME: Tests require pytest, which itself relies on setuptools.
    ;; One could bootstrap with an internal untested setuptools.
    (arguments
     `(#:tests? #f))
    (home-page "https://pypi.python.org/pypi/setuptools")
    (synopsis
     "Library designed to facilitate packaging Python projects")
    (description
     "Setuptools is a fully-featured, stable library designed to facilitate
packaging Python projects, where packaging includes:
Python package and module definitions,
distribution package metadata,
test hooks,
project installation,
platform-specific details,
Python 3 support.")
    (license psfl)))

(define python2-setuptools
  (package-with-python2 python-setuptools))

(define guix-pypi-utils
  (package
    (name "guix-pypi-utils")
    (version "0.1")
    ;(source (local-file "../guix-pypi-utils" #:recursive? #t))
    (source (origin
              (method git-fetch)
              (uri (git-reference
                     (url "http://git.cbaines.net/guix-pypi-utils")
                     (commit "86de22b526313a68e5c8bb8a361d5904c30d8b51")))
              (file-name (string-append name "-" version "-checkout"))
              (sha256
                (base32
                  "1n0f3cgxinxgfsf48vgvj6ggn5m8is7hrinx8bzmxiy4rlzaq5db"))))
    (build-system trivial-build-system)
    (arguments
     `(#:modules
       ((guix build utils)
        (ice-9 match))
       #:builder
       (begin
         (use-modules (guix build utils)
                      (ice-9 match))
         (let* ((out (assoc-ref %outputs "out"))
                (module-dir (string-append out "/share/guile/site/2.0"))
                (source (assoc-ref %build-inputs "source"))
                (guild (string-append (assoc-ref %build-inputs "guile")
                                      "/bin/guild")))

           (mkdir-p (string-append module-dir "/pypi"))
           (copy-recursively (string-append source "/pypi")
                             (string-append module-dir "/pypi"))

           (mkdir-p (string-append module-dir "/solver"))
           (install-file
             (string-append source "/solver/__init__.py")
             (string-append module-dir "/solver"))

           (display "pythonpath\n")
           (display (getenv "PYTHONPATH"))
           (substitute* (string-append module-dir "/pypi/dependency-solver.scm")
             (("\\(define %solver-location \"\"\\)")
              (string-append
                "(define %solver-location \"" module-dir "\")")))

           (setenv "GUILE_AUTO_COMPILE" "0")
           ;(for-each (lambda (file)
           ;            (let ((scm-file
           ;                    (string-append module-dir file))
           ;                  (go-file (match (string-split file #\.)
           ;                              ((base _)
           ;                               (string-append module-dir "/"
           ;                                              base ".go")))))
           ;              ;; Install compiled module.
           ;              (unless (zero? (system* guild "compile"
           ;                                      "-L" source
           ;                                      "-o" go-file
           ;                                      scm-file))
           ;                (error (format #f "Failed to compile ~s to ~s!"
           ;                               scm-file go-file)))))
           ;          (map
           ;            (lambda (file)
           ;              (substring
           ;                file
           ;                (string-length module-dir)))
           ;            (find-files (string-append
           ;                          module-dir
           ;                          "/pypi")
           ;                        ".*\\.scm$")))
           #t))))
    (inputs
      `(("unzip" ,unzip)
        ("guile" ,guile-2.0)))
    (propagated-inputs
      `(("guix" ,guix-0.11.0)
        ("guile-lib" ,guile-lib)
        ("guile-json" ,guile-json)
        ("pyguile" ,pyguile)
        ("libsolv" ,libsolv)
        ("python" ,python-2.7)
        ("python2-setuptools" ,python2-setuptools)
        ("python2-packaging" ,python2-packaging)))
    (home-page "https://example.com")
    (synopsis "guix-pypi-utils")
    (description "")
    (license gpl3+)))

(define guix-python-integration-project
  (package
    (name "guix-python-integration-project")
    (version "0.1")
    (source (local-file "." #:recursive? #t))
    (build-system trivial-build-system)
    (arguments
     `(#:modules
       ((guix build utils)
        (ice-9 match))
       #:builder
       (begin
         (use-modules (guix build utils)
                      (ice-9 match))
         (let* ((out (assoc-ref %outputs "out"))
                (module-dir (string-append out "/share/guile/site/2.0"))
                (source (assoc-ref %build-inputs "source"))
                (scm-files
                  (find-files "." ".*\\.scm$"))
                (guild (string-append (assoc-ref %build-inputs "guile")
                                      "/bin/guild")))
           ;; Make installation directories.
           (mkdir-p (string-append module-dir "/guix-python-integration-project"))

           (setenv "GUILE_AUTO_COMPILE" "0")
           (for-each (lambda (file)
                       (let* ((dest-file (string-append module-dir "/"
                                                        file))
                              (go-file (match (string-split file #\.)
                                         ((base _)
                                          (string-append module-dir "/"
                                                         base ".go")))))
                         ;; Install source module.
                         (copy-file file dest-file)
                         ;; Install compiled module.
                         (unless (zero? (system* guild "compile"
                                                 "-L" source
                                                 "-o" go-file
                                                 file))
                           (error (format #f "Failed to compile ~s to ~s!"
                                          file go-file)))))
                     (map
                       (lambda (file)
                         (display file)(display "\n")
                         (display
                           (substring
                             file
                             (string-length module-dir))) (display "\n")
                         (substring
                           file
                           (string-length module-dir)))
                       scm-files))
           #t))))
    (propagated-inputs
      `(("guix" ,guix-0.11.0)
        ("guile" ,guile-2.0)
        ("guix-pypi-utils" ,guix-pypi-utils)))
    (home-page "https://example.com")
    (synopsis "guix-pypi-utils")
    (description "")
    (license gpl3+)))

guix-python-integration-project