Install everything in PREFIX, set EXTRA_PATH to find it there.

--- ./Makefile.in~	2016-02-06 01:29:16.595090365 +0100
+++ ./Makefile.in	2016-02-06 09:29:04.286008931 +0100
@@ -133,9 +133,9 @@
 # require for testing here (like TCLX_LIBRARY).
 #========================================================================

-EXTRA_PATH	= $(top_builddir):$(TCL_BIN_DIR)
+EXTRA_PATH	= $(top_builddir):$(TCL_BIN_DIR):$(libdir)
 #EXTRA_PATH     = $(top_builddir):$(TCL_BIN_DIR):$(TK_BIN_DIR)
-TCLLIBPATH      = $(top_builddir)
+TCLLIBPATH      = $(pkglibdir)
 TCLSH_ENV	= TCL_LIBRARY=`@CYGPATH@ $(TCL_SRC_DIR)/library` \
 		  @LD_LIBRARY_PATH_VAR@="$(EXTRA_PATH):$(@LD_LIBRARY_PATH_VAR@)" \
 		  PATH="$(EXTRA_PATH):$(PATH)" \
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<div class='path'>path: <a href='/guix/log/?id=d2e0a4c54a3fadaa45b0558c3e2fdf9a26c63bf9&amp;showmsg=1'>root</a>/<a href='/guix/log/gnu?id=d2e0a4c54a3fadaa45b0558c3e2fdf9a26c63bf9&amp;showmsg=1'>gnu</a>/<a href='/guix/log/gnu/packages?id=d2e0a4c54a3fadaa45b0558c3e2fdf9a26c63bf9&amp;showmsg=1'>packages</a>/<a href='/guix/log/gnu/packages/scheme.scm?id=d2e0a4c54a3fadaa45b0558c3e2fdf9a26c63bf9&amp;showmsg=1'>scheme.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/gnu/packages/scheme.scm?id=d2e0a4c54a3fadaa45b0558c3e2fdf9a26c63bf9'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2023-07-18 18:11:07 +0200'>2023-07-18</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/scheme.scm?id=ac29f53d304ed6b875562375fbc66c9cd366f8fd'>gnu: texlive-tex-texinfo -&gt; texlive-texinfo.</a></td><td>Nicolas Goaziou</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/tex.scm (texlive-texinfo): New variable.
(texlive-tex-texinfo): Deprecate variable.
* doc/build.scm (pdf-manual):
* gnu/packages/finance.scm (optionmatrix):
* gnu/packages/lisp.scm (sbcl):
* gnu/packages/plotutils.scm (asymptote):
* gnu/packages/scheme.scm (mit-scheme):
* gnu/packages/xdisorg.scm (xforms): Use new name.


</td></tr>
<tr class='logheader'><td><span title='2023-07-11 16:04:44 +0200'>2023-07-11</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/scheme.scm?id=b716d17e1cbaa1362ea495370acf0178aa8347cc'>gnu: mit-scheme: Fix building</a></td><td>Zac Berkowitz</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/scheme.scm (mit-scheme)[arguments] Add 'set-env
  before 'configure, setting -Wno-array-parameter in CFLAGS and
  CPPFLAGS to ignore warning causing build break.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2023-05-18 23:44:21 -0400'>2023-05-18</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/scheme.scm?id=321ae25a26986c4ac06e5c0c99d19e1c808da6ac'>gnu: sicp: Build as a single info file.</a></td><td>Maxim Cournoyer</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
Fixes &lt;https://issues.guix.gnu.org/63565&gt;.

* gnu/packages/scheme.scm (sicp) [arguments]: Use '--no-split' makeinfo option
in build phase.

Reported-by: Andrey Mitrofanov &lt;abme@rambler.ru&gt;


</td></tr>
<tr class='logheader'><td><span title='2023-05-10 00:23:53 +0200'>2023-05-10</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/scheme.scm?id=fbea62f829f92da63b65d96d09a2a48b77b2c3d1'>gnu: emacs-gerbil-mode: Move to scheme.scm.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
This fixes a bug due to a top-level circular reference:

  $ guix show scheme48
  [...]
  ice-9/boot-9.scm:1685:16: In procedure raise-exception:
  error: gerbil: unbound variable

* gnu/packages/emacs-xyz.scm (emacs-gerbil-mode): Move to...
* gnu/packages/scheme.scm (emacs-gerbil-mode): ... here.


</td></tr>
<tr class='logheader'><td><span title='2023-04-24 20:58:37 -0400'>2023-04-24</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/scheme.scm?id=c9f82d57eb40d8ed4ca1c7ddf03d0f7284d7f9c2'>gnu: sicp: Fix build.</a></td><td>Maxim Cournoyer</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/scheme.scm (sicp) [build-system]: Use copy-build-system.
[native-inputs]: Remove source input.
[arguments]: Remove #:modules and #:builder arguments.  Add #:install-plan and
 #:phases arguments.  Patch out obsolete call.


</td></tr>
<tr class='logheader'><td><span title='2023-04-08 23:50:44 +0200'>2023-04-08</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/scheme.scm?id=c1262edba9118af6507dc47ce6ad61ffdec02384'>gnu: gerbil: Use G-expressions.</a></td><td>Juliana Sims</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/scheme.scm (gerbil)[source, arguments]: Reindent.
[arguments]: Rewrite using G-expressions. Do not return #t from custom
phases. Use #:tests? instead of deleting the check phase.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2023-04-08 23:50:26 +0200'>2023-04-08</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/scheme.scm?id=225ec28353b9d323638f6f334c2824cdaecdda79'>gnu: gerbil: Update to 0.17.0.</a></td><td>Juliana Sims</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/package/scheme.scm (gerbil): Update to 0.17.0.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;


</td></tr>