Bug#1079729: librsvg2-dev/experimental lacks dependencies for pkgconf

[Adrian Bunk]

Package: librsvg2-dev
Version: 2.58.93+dfsg-4
Severity: serious
Tags: ftbfs
Control: affects -1 src:rust-librsvg-rebind

https://buildd.debian.org/status/logs.php?pkg=rust-librsvg-rebind&ver=0.1.0-1

...
  cargo:warning=`PKG_CONFIG_ALLOW_SYSTEM_CFLAGS="1" "powerpc64le-linux-gnu-pkg-config" "--libs" "--cflags" "librsvg-2.0" "librsvg-2.0 >= 2.50"` did not exit successfully: exit status: 1
  error: could not find system library 'librsvg-2.0' required by the 'librsvg-rebind-sys' crate

  --- stderr
  Package harfbuzz was not found in the pkg-config search path.
  Perhaps you should add the directory containing `harfbuzz.pc'
  to the PKG_CONFIG_PATH environment variable
  Package 'harfbuzz', required by 'librsvg-2.0', not found
  Package 'libxml-2.0', required by 'librsvg-2.0', not found
  Package 'pangocairo', required by 'librsvg-2.0', not found
  Package 'pangoft2', required by 'librsvg-2.0', not found
  Package 'harfbuzz', required by 'librsvg-2.0', not found
  Package 'libxml-2.0', required by 'librsvg-2.0', not found
  Package 'pangocairo', required by 'librsvg-2.0', not found
  Package 'pangoft2', required by 'librsvg-2.0', not found
...


This is due to:
/usr/lib/x86_64-linux-gnu/pkgconfig/librsvg-2.0.pc:Requires: cairo >=  1.18.0, cairo-gobject >=  1.18.0, cairo-png >=  1.18.0, freetype2 >=  20.0.14, gdk-pixbuf-2.0 >=  2.20, gio-2.0 >=  2.24.0, glib-2.0 >=  2.50.0, harfbuzz >=  2.0.0, libxml-2.0 >=  2.9.0, pangocairo >=  1.50.0, pangoft2 >=  1.50.0, gmodule-2.0 >=  2.50.0