Retrieved from
https://github.com/NixOS/nixpkgs/raw/master/pkgs/development/libraries/qt-5/5.15/qtdeclarative-default-disable-qmlcache.patch

diff --git a/src/qml/qml/qqmltypeloader.cpp b/src/qml/qml/qqmltypeloader.cpp
index 1d66e75..827567a 100644
--- a/src/qml/qml/qqmltypeloader.cpp
+++ b/src/qml/qml/qqmltypeloader.cpp
@@ -727,7 +727,7 @@ bool QQmlTypeLoader::Blob::isDebugging() const
 
 bool QQmlTypeLoader::Blob::diskCacheEnabled() const
 {
-    return (!disableDiskCache() && !isDebugging()) || forceDiskCache();
+    return forceDiskCache();
 }
 
 bool QQmlTypeLoader::Blob::qmldirDataAvailable(const QQmlRefPointer<QQmlQmldirData> &data, QList<QQmlError> *errors)
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<tr><td><span title='2019-10-13 18:35:59 +0200'>2019-10-13</span></td><td><a href='/guix/commit/gnu/packages/tcl.scm?id=068d0a1c345104983a9b43f5e2cf4f7e70ab3c07'>gnu: tcl: Update home page.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/tcl.scm (tcl)[home-page]: Use HTTPS.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2019-06-27 23:33:48 +0200'>2019-06-27</span></td><td><a href='/guix/commit/gnu/packages/tcl.scm?id=5cc1075a76392666d3d733837f5c6252b1e48002'>Merge branch 'master' into core-updates</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2019-06-22 17:11:27 +0200'>2019-06-22</span></td><td><a href='/guix/commit/gnu/packages/tcl.scm?id=a5c86aa0fbb8a9fa7f5e1b79d652df54ff83229c'>gnu: Add go-github.com-nsf-gothic.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/tcl.scm (go-github.com-nsf-gothic): New variable.
</span></span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2019-06-22 17:10:48 +0200'>2019-06-22</span></td><td><a href='/guix/commit/gnu/packages/tcl.scm?id=d9d836c3231be0122355f42f52f6779d07776720'>gnu: Use license: prefix in tcl.scm.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/tcl.scm: Use license: prefix in tcl.scm.
</span></span></td><td>Julien Lepiller</td></tr>