* guix/build/utils.scm (set-path-environment-variable): When VALUE is
the empty string, call `unsetenv' instead of `setenv'.
* gnu/packages/guile.scm (guile-2.0)[arguments]: Remove `unsetenv'
trick.
* gnu/packages/guile.scm (guile-2.0): Add Bash as an input
when (%current-target-system) is true. Use %standard-cross-phases as
a basis when (%current-target-system) is true.
* gnu/packages/autotools.scm (automake)[native-search-paths]: New field.
* gnu/packages/guile.scm (guile-1.8)[native-search-paths]: New field.
(guile-2.0)[native-search-paths]: New field.
* gnu/packages/python.scm (python)[native-search-paths]: New field.
* gnu/packages/guile.scm (guile-reader): Change the character preceding the
guile version number from '-' to '_' so that it will not be misinterpreted
as the package version number.
* gnu/packages/guile.scm (guile-reader): Change the character preceding the
guile version number from '-' to '_' so that it will not be misinterpreted
as the package version number.