Remove interactive build for telega-server, as it fails on Guix.
Modify the `telega-server--find-bin' function to only use the version
of telega-server installed by Guix.

Created by Brett Gilio <brettg@gnu.org>

--- a/telega-server.el
+++ b/telega-server.el
@@ -113,7 +113,6 @@ If already deferring, then just executes the BODY."
 If BUILD-FLAGS is specified, then rebuild server without any
 queries using this flags for building, could be empty string.
 Otherwise query user about building flags."
-  (interactive)
   (telega-test-env 'quiet)
   (when (or build-flags
             (y-or-n-p "Build `telega-server'? "))
@@ -137,11 +136,8 @@ Otherwise query user about building flags."
 (defun telega-server--find-bin ()
   "Find telega-server executable.
 Raise error if not found."
-  (let ((exec-path (cons telega-directory exec-path)))
-    (or (executable-find "telega-server")
-        (progn (telega-server-build)
-               (executable-find "telega-server"))
-        (error "`telega-server' not found in exec-path"))))
+  (or (executable-find "telega-server")
+      (error "`telega-server' not found in exec-path")))
 
 (defun telega-server-version ()
   "Return telega-server version."

f='/guix/tree/tests/search-paths.scm?id=2ae2a15b075dd3c8d34f0c2e3af279e192931f45'>tree</a><a href='/guix/commit/tests/search-paths.scm?id=2ae2a15b075dd3c8d34f0c2e3af279e192931f45'>commit</a><a href='/guix/diff/tests/search-paths.scm?id=2ae2a15b075dd3c8d34f0c2e3af279e192931f45'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/search-paths.scm'>
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<div class='path'>path: <a href='/guix/log/?id=2ae2a15b075dd3c8d34f0c2e3af279e192931f45'>root</a>/<a href='/guix/log/tests?id=2ae2a15b075dd3c8d34f0c2e3af279e192931f45'>tests</a>/<a href='/guix/log/tests/search-paths.scm?id=2ae2a15b075dd3c8d34f0c2e3af279e192931f45'>search-paths.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/search-paths.scm?id=2ae2a15b075dd3c8d34f0c2e3af279e192931f45&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-06-14 22:09:38 +0200'>2019-06-14</span></td><td><a href='/guix/commit/tests/search-paths.scm?id=92d00ca4661e186022732a47956a2bc0ef16be96'>build: Remove 'gnu/packages/bootstrap' and its binaries.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/local.mk (bootstrapdir, bootstrap_i686_linuxdir)
(bootstrap_armhf_linuxdir, bootstrap_aarch64_linuxdir)
(bootstrap_mips64el_linuxdir, dist_bootstrap_i686_linux_DATA)
(dist_bootstrap_armhf_linux_DATA, dist_bootstrap_aarch64_linux_DATA)
(dist_bootstrap_mips64el_linux_DATA): Remove.
(set-bootstrap-executable-permissions): Remove target.
* Makefile.am (install-data-hook): Remove dependency on
'set-bootstrap-executable-permissions'.
* gnu/packages/bootstrap: Remove directory.
* tests/search-paths.scm ("evaluate-search-paths, separator is #f"):
Adjust to match .../aux-files/linux-libre.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-04-04 00:10:00 +0200'>2017-04-04</span></td><td><a href='/guix/commit/tests/search-paths.scm?id=f73bb91ebe8d78f54bb90d2168b353a4f5210f02'>tests: Adjust search-paths test following the introduction of aarch64.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes a regression introduced in
3b88f3767d9f3ad2cc64173525cd53d429bfe7e7.

* tests/search-paths.scm ("evaluate-search-paths, separator is #f"):
Change the expected result to "aarch64-linux".
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-01-23 22:23:41 +0100'>2017-01-23</span></td><td><a href='/guix/commit/tests/search-paths.scm?id=fcd75bdbfa99d14363b905afbf914eec20e69df8'>search-paths: Allow specs with #f as their separator.</a><span class='msg-avail'>...<span class='msg-tooltip'>This adds support for single-entry search paths.
Fixes &lt;http://bugs.gnu.org/25422&gt;.
Reported by Leo Famulari &lt;leo@famulari.name&gt;.

* guix/search-paths.scm (&lt;search-path-specification&gt;)[separator]:
Document as string or #f.
(evaluate-search-paths): Add case for SEPARATOR as #f.
(environment-variable-definition): Handle SEPARATOR being #f.
* guix/build/utils.scm (list-&gt;search-path-as-string): Add case for
SEPARATOR as #f.
(search-path-as-string-&gt;list): Likewise.
* guix/build/profiles.scm (abstract-profile): Likewise.
* tests/search-paths.scm: New file.
* Makefile.am (SCM_TESTS): Add it.
* tests/packages.scm ("--search-paths with single-item search path"):
New test.
* gnu/packages/version-control.scm (git)[native-search-paths](separator):
New field.
</span></span></td><td>Ludovic Courtès</td></tr>