bug#27621: [PATCH] gnu: inkscape: Use ungrafted poppler input.

[Ben Woodcroft]

Previously, inkscape failed to start, attempting to load an incorrect
poppler shared library version.

* gnu/packages/inkscape.scm (inkscape)[inputs]: Replace poppler with
poppler-0.56.0.
* gnu/packages/pdf.scm (poppler-0.56.0): Export it.
---
 gnu/packages/inkscape.scm | 3 ++-
 gnu/packages/pdf.scm      | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/gnu/packages/inkscape.scm b/gnu/packages/inkscape.scm
index 0f28e640a..b52c2e1a2 100644
--- a/gnu/packages/inkscape.scm
+++ b/gnu/packages/inkscape.scm
@@ -59,7 +59,8 @@
        ("gtkmm" ,gtkmm-2)
        ("gtk" ,gtk+-2)
        ("gsl" ,gsl)
-       ("poppler" ,poppler)
+       ("poppler" ,poppler-0.56.0) ; Use an ungrafted poppler so the correct
+                                   ; library is loaded.
        ("libpng" ,libpng)
        ("libxml2" ,libxml2)
        ("libxslt" ,libxslt)
diff --git a/gnu/packages/pdf.scm b/gnu/packages/pdf.scm
index dce02a7b5..574b223ee 100644
--- a/gnu/packages/pdf.scm
+++ b/gnu/packages/pdf.scm
@@ -130,7 +130,7 @@
    (license license:gpl2+)
    (home-page "https://poppler.freedesktop.org/";)))
 
-(define poppler-0.56.0
+(define-public poppler-0.56.0
   (package (inherit poppler)
   (version "0.56.0")
   (source
-- 
2.13.2