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03/05: gnu: python: Add "minimal" variants.


From: Ludovic Courtès
Subject: 03/05: gnu: python: Add "minimal" variants.
Date: Wed, 07 Oct 2015 22:17:01 +0000

civodul pushed a commit to branch core-updates
in repository guix.

commit 95288fcc6cfa184b500caa95062bf3194d255880
Author: Ludovic Courtès <address@hidden>
Date:   Wed Oct 7 21:27:36 2015 +0200

    gnu: python: Add "minimal" variants.
    
    * gnu/packages/python.scm (python2-minimal, python-minimal): New
      variables.
      (wrap-python3): New procedure.
      (python-wrapper): Use it.
      (python-minimal-wrapper): New variable.
    * gnu/packages/xml.scm (libxslt)[native-inputs]: Use
      PYTHON-MINIMAL-WRAPPER instead of PYTHON-WRAPPER.
    * gnu/packages/xorg.scm (xcb-proto, libxcb, xorg-server): Likewise.
---
 gnu/packages/python.scm |   43 +++++++++++++++++++++++++++++++++++++++++--
 gnu/packages/xml.scm    |    2 +-
 gnu/packages/xorg.scm   |    6 +++---
 3 files changed, 45 insertions(+), 6 deletions(-)

diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index 08f5bca..bb4b385 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -260,9 +260,46 @@ data types.")
                                         (version-major+minor version)
                                         "/site-packages"))))))))
 
-(define-public python-wrapper
+;; Minimal variants of Python, mostly used to break the cycle between Tk and
+;; Python (Tk -> libxcb -> Python.)
+
+(define-public python2-minimal
+  (package (inherit python-2)
+    (name "python-minimal")
+    (arguments
+     (substitute-keyword-arguments (package-arguments python-2)
+       ((#:configure-flags _)
+        `(list "--enable-shared"
+               (string-append "LDFLAGS=-Wl,-rpath="
+                              (assoc-ref %outputs "out") "/lib")))))
+    (inputs '())))                          ;none of the optional dependencies
+
+(define-public python-minimal
+  (package (inherit python)
+    (name "python-minimal")
+    (arguments
+     (substitute-keyword-arguments (package-arguments python)
+       ((#:configure-flags _)
+        `(let ((openssl (assoc-ref %build-inputs "openssl"))
+               (zlib    (assoc-ref %build-inputs "zlib"))
+               (out     (assoc-ref %outputs "out")))
+           (list "--enable-shared"
+                 (string-append "CPPFLAGS="
+                                "-I" openssl "/include "
+                                "-I" zlib "/include ")
+                 (string-append "LDFLAGS="
+                                "-L" openssl "/lib "
+                                "-L" zlib "/lib "
+                                "-Wl,-rpath=" out "/lib"))))))
+
+    ;; OpenSSL is a mandatory dependency of Python 3.x, for urllib;
+    ;; zlib is required by 'zipimport', used by pip.
+    (inputs `(("openssl" ,openssl)
+              ("zlib" ,zlib)))))
+
+(define* (wrap-python3 python #:optional (name "python-wrapper"))
   (package (inherit python)
-    (name "python-wrapper")
+    (name name)
     (source #f)
     (build-system trivial-build-system)
     (propagated-inputs `(("python" ,python)))
@@ -286,6 +323,8 @@ data types.")
 that they can be invoked under their usual name---e.g., @command{python}
 instead of @command{python3}.")))
 
+(define-public python-wrapper (wrap-python3 python))
+(define-public python-minimal-wrapper (wrap-python3 python-minimal))
 
 (define-public python-psutil
   (package
diff --git a/gnu/packages/xml.scm b/gnu/packages/xml.scm
index 5d65648..d9c92d6 100644
--- a/gnu/packages/xml.scm
+++ b/gnu/packages/xml.scm
@@ -135,7 +135,7 @@ project (but it is usable outside of the Gnome platform).")
     (synopsis "C library for applying XSLT stylesheets to XML documents")
     (inputs `(("libgcrypt" ,libgcrypt)
               ("libxml2" ,libxml2)
-              ("python" ,python-wrapper)
+              ("python" ,python-minimal-wrapper)
               ("zlib" ,zlib)))
     (description
      "Libxslt is an XSLT C library developed for the GNOME project.  It is
diff --git a/gnu/packages/xorg.scm b/gnu/packages/xorg.scm
index d4ed4b8..47dc0e2 100644
--- a/gnu/packages/xorg.scm
+++ b/gnu/packages/xorg.scm
@@ -2050,7 +2050,7 @@ legacy X clients.")
             "0bp3f53l9fy5x3mn1rkj1g81aiyzl90wacwvqdgy831aa3kfxb5l"))))
     (build-system gnu-build-system)
     (native-inputs
-      `(("pkg-config" ,pkg-config) ("python" ,python-wrapper)))
+      `(("pkg-config" ,pkg-config) ("python" ,python-minimal-wrapper)))
     (home-page "http://www.x.org/wiki/";)
     (synopsis "XML-XCB protocol descriptions")
     (description
@@ -4804,7 +4804,7 @@ protocol.")
         ("libxslt" ,libxslt)))
     (native-inputs
       `(("pkg-config" ,pkg-config)
-        ("python" ,python-wrapper)))
+        ("python" ,python-minimal-wrapper)))
     (arguments
      `(#:configure-flags '("--enable-xkb")))
     (home-page "http://www.x.org/wiki/";)
@@ -4889,7 +4889,7 @@ over Xlib, including:
         ("xtrans" ,xtrans)
         ("zlib" ,zlib)))
     (native-inputs
-       `(("python" ,python-wrapper)
+       `(("python" ,python-minimal-wrapper)
          ("pkg-config" ,pkg-config)))
     (arguments
      `(#:parallel-tests? #f



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