Change 'ensure-directories-exist' to look for 'mkdir' in $PATH, not in /bin.

--- maxima-5.36.1/lisp-utils/defsystem.lisp.orig	2014-11-22 16:21:30.000000000 -0500
+++ maxima-5.36.1/lisp-utils/defsystem.lisp	2015-05-25 21:53:31.223648483 -0400
@@ -4627,7 +4627,7 @@
         (cmd (if (member :win32 *features*)
                  (format nil "mkdir \"~a\""
                          (coerce (subst #\\ #\/ (coerce (namestring dir) 'list)) 'string))
-                 (format nil "/bin/mkdir -p ~S" (namestring dir)))))
+                 (format nil "mkdir -p ~S" (namestring dir)))))
    (unless (directory dir)
      (lisp:system cmd))
    ;; The second return value is supposed to be T if directories were
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<tr><td><span title='2024-02-10 22:59:43 +0100'>2024-02-10</span></td><td><a href='/guix/commit/gnu/build/secret-service.scm?id=f331a667d3827c5c7603c87956c601d5e42ef82b'>services: secret-service: Make the endpoint configurable.</a><span class='msg-avail'>...<span class='msg-tooltip'>Until now, the secret service had a hard-coded TCP endpoint on port
1004.  This change lets users specify arbitrary socket addresses.

* gnu/build/secret-service.scm (socket-address-&gt;string): New procedure,
taken from Shepherd.
(secret-service-send-secrets): Replace ‘port’ by ‘address’ and adjust
accordingly.
(secret-service-receive-secrets): Likewise.
* gnu/services/virtualization.scm (secret-service-shepherd-services):
Likewise.
(secret-service-operating-system): Add optional ‘address’ parameter and
honor it.  Adjust ‘start’ method accordingly.

Change-Id: I87a9514f1c170dca756ce76083d7182c6ebf6578
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-10-01 22:58:19 +0200'>2023-10-01</span></td><td><a href='/guix/commit/gnu/build/secret-service.scm?id=e90a972ce232a6a57995df1ed90c9ddbaf5dbcae'>secret-service: Increase default handshake timeout.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/build/secret-service.scm (secret-service-send-secrets):
Increase #:handshake-timeout.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-05-06 17:12:45 +0200'>2023-05-06</span></td><td><a href='/guix/commit/gnu/build/secret-service.scm?id=e88bf64e6fa61265dca81a799ce824f639a2875a'>services: dbus-service, secret-service: Do not cause (fibers) to be loaded.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/build/dbus-service.scm (sleep*): Pass #:ensure #f to 'resolve-module'.
* gnu/build/secret-service.scm (wait-for-readable-fd): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-09-13 00:31:04 +0200'>2022-09-13</span></td><td><a href='/guix/commit/gnu/build/secret-service.scm?id=491dd62b38e1772f3e50de58118d9b9ac97272ff'>secret-service: Mark sockets as SOCK_CLOEXEC.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/build/secret-service.scm (secret-service-send-secrets)
(secret-service-receive-secrets): Pass SOCK_CLOEXEC to 'socket'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-04-07 00:08:56 +0200'>2022-04-07</span></td><td><a href='/guix/commit/gnu/build/secret-service.scm?id=28b3763e33cd71fe281cd71a568c54fea7f4cf4f'>secret-service: Allow cooperative scheduling when Fibers is used.</a><span class='msg-avail'>...<span class='msg-tooltip'>This lets the 'childhurd' service start in the background, letting
shepherd perform other tasks in the meantime, including serving
clients (such as the 'herd' command).

* gnu/build/secret-service.scm (with-modules): New macro.
(wait-for-readable-fd): Add cooperative implementation when Fibers is in
use.
(secret-service-send-secrets): Define 'sleep' so that it cooperates when
Fibers is in use.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-04-07 00:08:56 +0200'>2022-04-07</span></td><td><a href='/guix/commit/gnu/build/secret-service.scm?id=83121aa85a0237f81c9a3c1dd36f1206c1cae854'>secret-service: Abstract 'wait-for-readable-fd'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/build/secret-service.scm (wait-for-readable-fd): New procedure.
(secret-service-send-secrets): Use it instead of 'select'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-12-12 23:20:49 +0100'>2021-12-12</span></td><td><a href='/guix/commit/gnu/build/secret-service.scm?id=39e3b4b7cee175a3c1f37329744c582528d55f5d'>services: secret-service: Turn into a Shepherd service.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/virtualization.scm (secret-service-activation): Remove.
(secret-service-shepherd-services): New procedure.
(secret-service-type)[extensions]: Remove ACTIVATION-SERVICE-TYPE
extension.  Add SHEPHERD-ROOT-SERVICE-TYPE and
USER-PROCESSES-SERVICE-TYPE extensions.
* gnu/build/secret-service.scm (delete-file*): New procedure.
(secret-service-receive-secrets): Use it.
</span></span></td><td>Ludovic Courtès</td></tr>