Taken from https://bug1339931.bmoattachments.org/attachment.cgi?id=8837770.

Add major version to pkg-config filename.
Author: Rico Tzschichholz <ricotz@ubuntu.com>
Forwarded: no
Last-Update: 2015-05-04

Index: b/js/src/Makefile.in
===================================================================
--- a/js/src/Makefile.in
+++ b/js/src/Makefile.in
@@ -214,10 +214,10 @@
 $(JS_CONFIG_NAME): js-config
    cp $^ $@
 
-$(LIBRARY_NAME).pc: js.pc
+$(JS_LIBRARY_NAME).pc: js.pc
 	cp $^ $@
 
-install:: $(LIBRARY_NAME).pc
+install:: $(JS_LIBRARY_NAME).pc
 	$(SYSINSTALL) $^ $(DESTDIR)$(libdir)/pkgconfig
 
 install:: js-config.h
34a11e7f16374ae6e3291da5860d1b'/><select name='h' onchange='this.form.submit();'>
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<div class='path'>path: <a href='/guix/log/?id=913059a12034a11e7f16374ae6e3291da5860d1b'>root</a>/<a href='/guix/log/tests?id=913059a12034a11e7f16374ae6e3291da5860d1b'>tests</a>/<a href='/guix/log/tests/crate.scm?id=913059a12034a11e7f16374ae6e3291da5860d1b'>crate.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/crate.scm?id=913059a12034a11e7f16374ae6e3291da5860d1b&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2017-01-01 18:20:52 +0100'>2017-01-01</span></td><td><a href='/guix/commit/tests/crate.scm?id=f1d136957d0d5634e60e5389a046a917169cdb9e'>build-system: cargo: Handle Cargo.lock file not present.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/build-system/cargo.scm (cargo-build): Add src output.
  (private-keywords): Add #:outputs.
* guix/build/cargo-build-system.scm (configure): Use /share/rust-source
  when replacing inputs.
  (build, check): Don't do anything when there isn't a Cargo.lock file
  present.
  (install): Install sources to src output. When a Cargo.lock file is
  present use cargo install to install binaries to out.
* guix/import/crate.scm (make-crate-sexp): Importer uses the src output
  for crate inputs by default.
* guix/import/utils.scm (package-names-&gt;package-inputs, maybe-inputs,
  maybe-native-inputs): Take an optional output argument.
* tests/crate.scm (crate-&gt;guix-package test): Update.

Problem reported by Francisco Gómez García &lt;espectalll@kydara.com&gt;.
</span></span></td><td>David Craven</td></tr>
<tr><td><span title='2017-01-01 18:12:06 +0100'>2017-01-01</span></td><td><a href='/guix/commit/tests/crate.scm?id=f53a5514e0e9535d2e7c668803e64b4aac17da2b'>import: crate: Provide a default home-page value.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/import/crate.scm (make-crate-sexp): Provide a default home-page
  value.
* tests/crate.scm (test-crate): Add repository field.

Problem reported by ng0 &lt;ng0@libertad.pw&gt;.
</span></span></td><td>David Craven</td></tr>
<tr><td><span title='2016-12-14 16:30:42 +0100'>2016-12-14</span></td><td><a href='/guix/commit/tests/crate.scm?id=3e0c036584b41bcc08a8c8e040295716108bb0b2'>import: Add importer for rust crates.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/import/crate.scm: New file.
* guix/scripts/import/crate.scm: New file.
* guix/scripts/import.scm (importers): Add crate importer.
* tests/crate.scm: New file.
* doc/guix.texi: Add crate importer to table.
* Makefile.am (MODULES, SCM_TESTS): Add files.
</span></span></td><td>David Craven</td></tr>