Custom Dissector missing from installer

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I have created a custom dissector (named "r1") plugin, which I have created inside a fork of the wireshark repo (v 4.7.0). I am devolving this on a windows machine and have followed the wireshark dev guide.

I am at the point where I want to create an installer, but when I follow step 2.2.1.16 I get an unexpected result, my plugin is not found on the newly installed development build of wireshark. But when I build wireshark locally I do find my plugin.

What am I messing up?

Exact steps:

1 - Cloned wireshark from https://gitlab.com/wireshark/wireshark.git.

2 - Created custom dissector plugin and put the following files into C:\Development\wireshark\plugins\epan\r1 - CMakeLists.txt - packet-r1.c - plugin-rc.in - README

3 - Added plugin path to CMakeListCustom.txt:

set(CUSTOM_PLUGIN_SRC_DIR
    plugins/epan/r1
)

4 - Opened visual studio developer prompt and ran the following commands:

set WIRESHARK_BASE_DIR=C:\Development\wireshark-third-party
set CMAKE_PREFIX_PATH=C:\Qt\6.9.3\msvc2022_64
set WIRESHARK_VERSION_EXTRA=-r1v0.1

5 - Ran CMake:

cmake -G "Visual Studio 17 2022" -A x64 ..\wireshark

6 - Ran Msbuild to build wireshark with my plugin:

msbuild /m /p:Configuration=RelWithDebInfo Wireshark.sln

Note: If I run the exe that is created from this step my dissector plugin successfully loads.

7 - Create the installer:

msbuild /m /p:Configuration=RelWithDebInfo wireshark_nsis_prep.vcxproj
msbuild /m /p:Configuration=RelWithDebInfo wireshark_nsis.vcxproj

8 - ran the installer exe located at C:\Development\wsbuild64\packaging\nsis

9 - Launch wireshark.

Checking help -> about reveals:

• wireshark version is 4.7.0-r1v0.1
• my plugin is not found in the plugin list.