diff --git a/.gitignore b/.gitignore
index ab95805..b02e6ba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,6 @@ SOURCES/nodejs-10.21.0-5.fc32.src.rpm
 SOURCES/nspr-4.25.0-1.el8_0.src.rpm
 SOURCES/nss-3.53.1-3.fc32.src.rpm
 SOURCES/openssl-1.0.2k-19.6.bundle.el7_7.src.rpm
-SOURCES/thunderbird-78.11.0.source.tar.xz
-SOURCES/thunderbird-langpacks-78.11.0-20210531.tar.xz
+SOURCES/thunderbird-78.12.0.source.tar.xz
+SOURCES/thunderbird-langpacks-78.12.0-20210712.tar.xz
 SOURCES/yasm-1.2.0-3.el5.src.rpm
diff --git a/.thunderbird.metadata b/.thunderbird.metadata
index c84be99..bfbc2d9 100644
--- a/.thunderbird.metadata
+++ b/.thunderbird.metadata
@@ -6,6 +6,6 @@ e188ab1a444697bc649e223c28389d82ca94c472 SOURCES/libffi-3.0.13-18.el7_3.src.rpm
 07d67c90367c3ec0d6cebc1a5793c21076d34b78 SOURCES/nspr-4.25.0-1.el8_0.src.rpm
 223c02166b1cb9863b9f453ef687d7805a93e7af SOURCES/nss-3.53.1-3.fc32.src.rpm
 a379070abf5000cde61411c97af7e733b267a4d3 SOURCES/openssl-1.0.2k-19.6.bundle.el7_7.src.rpm
-19b6827a233ae88488a7de4e9f988610cccca9ea SOURCES/thunderbird-78.11.0.source.tar.xz
-e12ad30bdf8288817f0b61c3d6322d57086cf161 SOURCES/thunderbird-langpacks-78.11.0-20210531.tar.xz
+98228bff32bf6cb7e0e34eb135a800d3200881c1 SOURCES/thunderbird-78.12.0.source.tar.xz
+a331ca78bb12b64578021ededef270d98a5762a5 SOURCES/thunderbird-langpacks-78.12.0-20210712.tar.xz
 77fd30f7ebc12a629a31c1e252cec06af55a71fe SOURCES/yasm-1.2.0-3.el5.src.rpm
diff --git a/SOURCES/thunderbird-redhat-default-prefs.js.rhel6 b/SOURCES/thunderbird-redhat-default-prefs.js.rhel6
deleted file mode 100644
index 26e8d17..0000000
--- a/SOURCES/thunderbird-redhat-default-prefs.js.rhel6
+++ /dev/null
@@ -1,33 +0,0 @@
-pref("app.update.enabled", false);
-pref("app.update.autoInstallEnabled", false);
-# Allow users to set custom colors
-# pref("browser.display.use_system_colors",   true);
-pref("general.useragent.vendor", "Red Hat");
-pref("general.useragent.vendorSub", "THUNDERBIRD_RPM_VR");
-pref("intl.locale.matchOS", true);
-pref("mail.shell.checkDefaultClient", false);
-pref("toolkit.networkmanager.disable", false);
-pref("offline.autoDetect", true);
-
-# Disable global indexing by default
-pref("mailnews.database.global.indexer.enabled", false);
-
-# Do not switch to Smart Folders after upgrade to 3.0b4
-pref("mail.folder.views.version", "1");
-pref("extensions.shownSelectionUI", true);
-pref("extensions.autoDisableScope", 0);
-
-# For rhbz#1024232
-pref("ui.SpellCheckerUnderlineStyle",       1);
-
-/* Workaround for rhbz#1134876 */
-pref("javascript.options.baselinejit",      false);
-/* Workaround for rhbz#1110291 */
-pref("network.negotiate-auth.allow-insecure-ntlm-v1", true);
-/* Workaround for mozbz#1063315 */
-pref("security.use_mozillapkix_verification", false);
-/* Use OS settings for UI language */
-pref("intl.locale.requested", "");
-pref("datareporting.healthreport.uploadEnabled", false);
-pref("datareporting.policy.dataSubmissionEnabled", false);
-pref("toolkit.telemetry.archive.enabled", false);
diff --git a/SOURCES/thunderbird-redhat-default-prefs.js.rhel7 b/SOURCES/thunderbird-redhat-default-prefs.js.rhel7
deleted file mode 100644
index 26e8d17..0000000
--- a/SOURCES/thunderbird-redhat-default-prefs.js.rhel7
+++ /dev/null
@@ -1,33 +0,0 @@
-pref("app.update.enabled", false);
-pref("app.update.autoInstallEnabled", false);
-# Allow users to set custom colors
-# pref("browser.display.use_system_colors",   true);
-pref("general.useragent.vendor", "Red Hat");
-pref("general.useragent.vendorSub", "THUNDERBIRD_RPM_VR");
-pref("intl.locale.matchOS", true);
-pref("mail.shell.checkDefaultClient", false);
-pref("toolkit.networkmanager.disable", false);
-pref("offline.autoDetect", true);
-
-# Disable global indexing by default
-pref("mailnews.database.global.indexer.enabled", false);
-
-# Do not switch to Smart Folders after upgrade to 3.0b4
-pref("mail.folder.views.version", "1");
-pref("extensions.shownSelectionUI", true);
-pref("extensions.autoDisableScope", 0);
-
-# For rhbz#1024232
-pref("ui.SpellCheckerUnderlineStyle",       1);
-
-/* Workaround for rhbz#1134876 */
-pref("javascript.options.baselinejit",      false);
-/* Workaround for rhbz#1110291 */
-pref("network.negotiate-auth.allow-insecure-ntlm-v1", true);
-/* Workaround for mozbz#1063315 */
-pref("security.use_mozillapkix_verification", false);
-/* Use OS settings for UI language */
-pref("intl.locale.requested", "");
-pref("datareporting.healthreport.uploadEnabled", false);
-pref("datareporting.policy.dataSubmissionEnabled", false);
-pref("toolkit.telemetry.archive.enabled", false);
diff --git a/SOURCES/thunderbird.sh.in b/SOURCES/thunderbird.sh.in
index c0dc70b..6a9cb72 100644
--- a/SOURCES/thunderbird.sh.in
+++ b/SOURCES/thunderbird.sh.in
@@ -10,12 +10,12 @@
 MOZ_ARCH=$(uname -m)
 case $MOZ_ARCH in
         x86_64 | s390x | sparc64 )
-                MOZ_LIB_DIR="/usr/lib64"
-                SECONDARY_LIB_DIR="/usr/lib"
+                MOZ_LIB_DIR="%PREFIX%/lib64"
+                SECONDARY_LIB_DIR="%PREFIX%/lib"
                 ;;
         * )
-                MOZ_LIB_DIR="/usr/lib"
-                SECONDARY_LIB_DIR="/usr/lib64"
+                MOZ_LIB_DIR="%PREFIX%/lib"
+                SECONDARY_LIB_DIR="%PREFIX%/lib64"
                 ;;
 esac
 
@@ -45,7 +45,7 @@ MOZ_EXTENSIONS_PROFILE_DIR="$HOME/.mozilla/extensions/{3550f703-e582-4d05-9a08-4
 ##
 ## Set MOZ_APP_LAUNCHER for gnome-session
 ##
-export MOZ_APP_LAUNCHER="/usr/bin/thunderbird"
+export MOZ_APP_LAUNCHER="%PREFIX%/bin/thunderbird"
 
 ##
 ## Disable the GNOME crash dialog, Moz has it's own
diff --git a/SPECS/thunderbird.spec b/SPECS/thunderbird.spec
index 1ac467f..ffd684a 100644
--- a/SPECS/thunderbird.spec
+++ b/SPECS/thunderbird.spec
@@ -6,34 +6,30 @@
 %global debug_package %{nil}
 %endif
 
-%global rhel_minor_version -1
-%if 0%{?flatpak:1}
-%global rhel_minor_version 4
-%endif
-%if "%{?dist}" == ".el8"
-%global rhel_minor_version 5
-%endif
-%if "%{?dist}" == ".el8_4"
-%global rhel_minor_version 4
-%endif
-%if "%{?dist}" == ".el8_3"
-%global rhel_minor_version 3
-%endif
-%if "%{?dist}" == ".el8_2"
-%global rhel_minor_version 2
-%endif
-%if "%{?dist}" == ".el8_1"
-%global rhel_minor_version 1
-%endif
-%if "%{?dist}" == ".el8_0"
-%global rhel_minor_version 0
-%endif
+%{lua:
+function dist_to_rhel_minor(str, start)
+  match = string.match(str, ".module%+el8.%d+")
+  if match then
+     return string.sub(match, 13)
+  end
+  match = string.match(str, ".el8_%d+")
+  if match then
+     return string.sub(match, 6)
+  end
+  match = string.match(str, ".el8")
+  if match then
+     return 5
+  end
+  return -1
+end}
+
+%global rhel_minor_version %{lua:print(dist_to_rhel_minor(rpm.expand("%dist")))}
 
 %global system_nss        1
 %global bundle_nss        0
 
 %if 0%{?rhel} == 8
-  %if 0%{?rhel_minor_version} < 2
+  %if %{rhel_minor_version} < 2
 %global bundle_nss        1
   %endif
 %endif
@@ -155,7 +151,7 @@
 %define use_bundled_yasm        0
 
 %if 0%{?rhel} == 8
-  %if 0%{?rhel_minor_version} <= 2
+  %if %{rhel_minor_version} <= 2
 %define use_bundled_nodejs      1
   %endif
 %endif
@@ -197,8 +193,8 @@
 %global build_langpacks         1
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
-Version:        78.11.0
-Release:        1%{?dist}
+Version:        78.12.0
+Release:        2%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Group:          Applications/Internet
@@ -213,7 +209,7 @@ ExclusiveArch:  i686 x86_64 ppc64 s390x
 # From ftp://archive.mozilla.org/pub/thunderbird/releases/%{version}%{?ext_version}/source
 Source0:        https://archive.mozilla.org/pub/thunderbird/releases/%{version}%{?pre_version}/source/thunderbird-%{version}%{?pre_version}.source.tar.xz
 %if %{build_langpacks}
-Source1:        thunderbird-langpacks-%{version}%{?ext_version}-20210531.tar.xz
+Source1:        thunderbird-langpacks-%{version}%{?ext_version}-20210712.tar.xz
 # Locales for lightning
 %endif
 Source2:        cbindgen-vendor-0.14.3.tar.xz
@@ -406,7 +402,7 @@ BuildRequires:  openssl-devel
 %endif
 
 %if 0%{?rhel} == 8
-  %if 0%{?rhel_minor_version} >= 3
+  %if %{rhel_minor_version} >= 3
 BuildRequires:  pkgconfig(libpipewire-0.3)
   %else
 BuildRequires:  pipewire-devel
@@ -535,7 +531,7 @@ Mozilla Thunderbird is a standalone mail and newsgroup client.
 %prep
 echo "Build environment"
 echo "dist                  %{?dist}"
-echo "RHEL 8 minor version: %{?rhel_minor_version}"
+echo "RHEL 8 minor version: %{rhel_minor_version}"
 echo "use_bundled_ffi       %{?use_bundled_ffi}"
 echo "use_bundled_python_2  %{?use_bundled_python_2}"
 echo "use_bundled_python_3  %{?use_bundled_python_3}"
@@ -573,8 +569,13 @@ echo "use_bundled_yasm      %{?use_bundled_yasm}"
 %patch215 -p1 -b .addons
 %patch219 -p1 -b .rhbz-1173156
 %patch224 -p1 -b .1170092
+
 %if 0%{?rhel} == 8
-  %if 0%{?rhel_minor_version} >= 3
+  %if %{rhel_minor_version} >= 3
+# fixing /usr/include in the patch for the flatpak build
+    %if 0%{?flatpak}
+sed -ie 's|/usr/include|/app/include|' %_sourcedir/firefox-pipewire-0-3.patch
+    %endif
 %patch235 -p1 -b .pipewire-0-3
   %else
 %patch231 -p1 -b .pipewire
@@ -1256,6 +1257,7 @@ desktop-file-install --dir %{buildroot}%{_datadir}/applications %{SOURCE20}
 rm -rf %{buildroot}%{_bindir}/thunderbird
 %{__rm} -rf %{buildroot}%{_bindir}/thunderbird
 %{__cat} %{SOURCE21} > %{buildroot}%{_bindir}/thunderbird
+sed -i -e 's|%PREFIX%|%{_prefix}|' %{buildroot}%{_bindir}/thunderbird
 %if 0%{?bundle_gtk3}
 sed -i -e 's|%RHEL_ENV_VARS%|export XDG_DATA_DIRS="$MOZ_LIB_DIR/thunderbird/bundled/share:/usr/share:$XDG_DATA_DIRS"\nexport FONTCONFIG_FILE="$MOZ_LIB_DIR/thunderbird/bundled/etc/fonts/fonts.conf"|' %{buildroot}%{_bindir}/thunderbird
 %else
@@ -1344,7 +1346,56 @@ test -f "%{buildroot}%{mozappdir}/distribution/extensions/unicode-segmentation/s
 test -f "%{buildroot}%{mozappdir}/distribution/extensions/unicode-width/scripts/unicode.py" && sed -i -e 's|/usr/bin/env python$|/usr/bin/env python2|' %{buildroot}%{mozappdir}/distribution/extensions/unicode-width/scripts/unicode.py
 
 # Removing librnp.so - we cannot deliver that in RHELs
-# {__rm} -rf %{buildroot}%{mozappdir}/librnp.so
+#{__rm} -rf %{buildroot}%{mozappdir}/librnp.so
+
+# Register as an application to be visible in the software center
+#
+# NOTE: It would be *awesome* if this file was maintained by the upstream
+# project, translated and installed into the right place during `make install`.
+#
+# See http://www.freedesktop.org/software/appstream/docs/ for more details.
+#
+mkdir -p $RPM_BUILD_ROOT%{_datadir}/appdata
+cat > $RPM_BUILD_ROOT%{_datadir}/appdata/mozilla-thunderbird.appdata.xml <<EOF
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright 2014 Richard Hughes <richard@hughsie.com> -->
+<!--
+BugReportURL: https://bugzilla.mozilla.org/show_bug.cgi?id=1071065
+SentUpstream: 2014-09-22
+-->
+<application>
+  <id type="desktop">mozilla-thunderbird.desktop</id>
+  <metadata_license>CC0-1.0</metadata_license>
+  <project_license>MPLv1.1 or GPLv2+ or LGPLv2+</project_license>
+  <description>
+    <p>
+      Thunderbird is an email client that allows you to read, write and organise all
+      of your email messages. It is compatible with most email accounts, including the
+      most popular webmail services.
+    </p>
+    <p>
+      Thunderbird is designed by Mozilla, a global community working together to make
+      the Internet better. Mozilla believe that the Internet should be open, public,
+      and accessible to everyone without any restrictions.
+    </p>
+    <ul>
+      <li>Easier than ever to set up a new e-mail account</li>
+      <li>Awesome search allows you to find your messages fast</li>
+      <li>Thousands of add-ons give you the freedom to make Thunderbird your own</li>
+    </ul>
+  </description>
+  <url type="homepage">http://www.mozilla.org/thunderbird/</url>
+  <screenshots>
+    <screenshot type="default">https://raw.githubusercontent.com/hughsie/fedora-appstream/master/screenshots-extra/mozilla-thunderbird/a.png</screenshot>
+  </screenshots>
+  <releases>
+    <release version="%{version}" date="$(date '+%F')"/>
+  </releases>
+  <!-- FIXME: change this to an upstream email address for spec updates
+  <updatecontact>someone_who_cares@upstream_project.org</updatecontact>
+   -->
+</application>
+EOF
 
 #---------------------------------------------------------------------
 
@@ -1394,6 +1445,7 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 %files -f %{name}.lang
 %defattr(-,root,root,-)
 %attr(755,root,root) %{_bindir}/thunderbird
+%{_datadir}/appdata/*.appdata.xml
 %attr(644,root,root) %{_datadir}/applications/thunderbird.desktop
 %dir %{_datadir}/mozilla/extensions/%{thunderbird_app_id}
 %dir %{_libdir}/mozilla/extensions/%{thunderbird_app_id}
@@ -1460,6 +1512,12 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Mon Jul 12 2021 Eike Rathke <erack@redhat.com> - 78.12.0-2
+- Update to 78.12.0 build2
+
+* Thu Jul 08 2021 Eike Rathke <erack@redhat.com> - 78.12.0-1
+- Update to 78.12.0 build1
+
 * Mon May 31 2021 Eike Rathke <erack@redhat.com> - 78.11.0-1
 - Update to 78.11.0 build1