Purity: don't look for library dependencies (of the form `-lfoo') in
/lib and /usr/lib.  Likewise, when searching for included Makefiles,
don't look in /usr/include and friends.

Borrowed from similar patch for GNU Make and adjusted for Remake.

--- remake-4.3+dbg-1.5/src/read.c.orig	2020-03-14 17:06:16.000000000 -0500
+++ remake-4.3+dbg-1.5/src/read.c	2020-07-31 22:34:03.862383862 -0500
@@ -104,7 +104,7 @@
 # define INCLUDEDIR "."
 #endif
     INCLUDEDIR,
-#ifndef _AMIGA
+#if 0
     "/usr/gnu/include",
     "/usr/local/include",
     "/usr/include",
--- remake-4.3+dbg-1.5/src/remake.c.orig	2020-03-14 17:06:16.000000000 -0500
+++ remake-4.3+dbg-1.5/src/remake.c	2020-07-31 22:34:26.798330508 -0500
@@ -1665,8 +1665,10 @@
 {
   static const char *dirs[] =
     {
+#if 0
       "/lib",
       "/usr/lib",
+#endif
 #if defined(WINDOWS32) && !defined(LIBDIR)
 /*
  * This is completely up to the user at product install time. Just define
ed Guix</td><td class='sub right'></td></tr></table>
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<div class='path'>path: <a href='/guix/log/?id=4bf2637c4947ad874821c58ca0eb2583753f5631'>root</a>/<a href='/guix/log/tests?id=4bf2637c4947ad874821c58ca0eb2583753f5631'>tests</a>/<a href='/guix/log/tests/records.scm?id=4bf2637c4947ad874821c58ca0eb2583753f5631'>records.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/records.scm?id=4bf2637c4947ad874821c58ca0eb2583753f5631&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-04-29 01:22:04 +0200'>2021-04-29</span></td><td><a href='/guix/commit/tests/records.scm?id=524c9800afb433cc474132185d8e37f72004adb3'>diagnostics, ui: Adjust to 'read-error' and 'syntax-error' in Guile 3.0.6.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/diagnostics.scm (source-properties-&gt;location): Add clause for
vectors.
* guix/ui.scm (report-load-error): Tweak 'read-error' handling for 3.0.6.
* tests/guix-package.sh: Relax regexp for the "unbound variable"
diagnostic check.
* tests/guix-system.sh: Adjust "missing closing paren" check for 3.0.6.
* tests/records.scm (location-alist): New procedure.
("define-record-type* &amp; wrong field specifier")
("define-record-type* &amp; wrong field specifier, identifier")
("define-record-type* &amp; duplicate initializers"): Use it.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-01-16 18:30:57 +0100'>2020-01-16</span></td><td><a href='/guix/commit/tests/records.scm?id=47212fc763788660ff9051ccee1f6fa8a0db7bdd'>records: Improve reporting of "invalid field specifier" errors.</a><span class='msg-avail'>...<span class='msg-tooltip'>Previously users would just see:

  error: invalid field specifier

without source location or hints.

* guix/records.scm (expand): Add optional 'parent-form' parameter and
pass it to 'syntax-violation' when it is true.
(make-syntactic-constructor): Pass S as a third argument to
'report-invalid-field-specifier'.
* guix/ui.scm (report-load-error): For 'syntax-error', show SUBFORM or
FORM in the message.
* tests/records.scm ("define-record-type* &amp; wrong field specifier"): Add
a 'subform' parameter and adjust test accordingly.
("define-record-type* &amp; wrong field specifier, identifier"): New test.
* tests/guix-system.sh: Add test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-03-30 11:08:39 +0100'>2019-03-30</span></td><td><a href='/guix/commit/tests/records.scm?id=d2be7e3c4ba8d6d0dde9b4c0bff623ab85637424'>records: Support custom 'this' identifiers.</a><span class='msg-avail'>...<span class='msg-tooltip'>This lets record users choose an identifier other than 'this-record'.

* guix/records.scm (make-syntactic-constructor): Add #:this-identifier.
[wrap-field-value]: Honor it.
(define-record-type*): Add form with extra THIS-IDENTIFIER and honor
it.
* tests/records.scm ("define-record-type* &amp; thunked &amp; inherit &amp; custom this"):
New test.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-03-25 23:37:06 +0100'>2019-03-25</span></td><td><a href='/guix/commit/tests/records.scm?id=abd4d6b33dba4de228e90ad15a8efb456fcf7b6e'>records: Allow thunked fields to refer to 'this-record'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/records.scm (this-record): New syntax parameter.
(make-syntactic-constructor)[wrap-field-value]: When F is thunked,
return a one-argument lambda instead of a thunk, and parameterize
THIS-RECORD.
(define-record-type*)[thunked-field-accessor-definition]: Pass X
to (real-get X).
* tests/records.scm ("define-record-type* &amp; thunked &amp; this-record")
("define-record-type* &amp; thunked &amp; default &amp; this-record")
("define-record-type* &amp; thunked &amp; inherit &amp; this-record"): New tests.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-01-22 23:04:05 +0100'>2019-01-22</span></td><td><a href='/guix/commit/tests/records.scm?id=c2dcff41c2e47f5f978f467864d5ed7829939884'>records: Detect duplicate field initializers.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/records.scm (report-duplicate-field-specifier): New procedure.
(make-syntactic-constructor): Call it.
* tests/records.scm ("define-record-type* &amp; duplicate initializers"):
New test.

Co-authored-by: Mark H Weaver &lt;mhw@netris.org&gt;
</span></span></td><td>Ludovic Courtès</td></tr>