Pycam missing gtk

I'm on Linux Mint 21.1. When I try to run pycam, I get the following:
Enabled 6 parallel local processes
Failed to import GTK: No module named 'gtk'
PyCAM dependency problem
Error: Failed to load the GTK interface.
Details:
    Python bindings for GTK+: MISSING (Install the package 'python-gtk2')

If dpkg is the right thing to look at, it seems to think I have gtk:
$ dpkg -l libgtk2.0-0 libgtk-3-0 
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name              Version          Architecture Description
+++-=================-================-============-==================================================
ii  libgtk-3-0:amd64  3.24.33-1ubuntu2 amd64        GTK graphical user interface library
ii  libgtk2.0-0:amd64 2.24.33-2ubuntu2 amd64        GTK graphical user interface library - old version

I don't know Linux enough to know how to proceed. Anyone have a clue for me?

Steve

Yes, tried that.
E: Unable to locate package python-gtk2
Search found these:
pkgs.org/download/python-gtk2
packages.ubuntu.com/bionic/python-gtk2
which admit its existence, but I don't see how to download. The links on the first page take me in loops, rather than offering a download.

could this be because mint 21 is python3 and pycam is looking for gtk2.....

install the newer version of pycam

pycam.sourceforge.net/requirements/

sourceforge.net/projects/pycam/files/pycam/0.6.1/

Roberspark and Tommylight, I haven't had time to get much further. I did find a repository that had it and got more dependency errors, which may be related to Python 2/3. May not.

Unpacking python-gtk2 (2.24.0-5.1ubuntu2) over (2.24.0-5.1ubuntu2) ...
dpkg: dependency problems prevent configuration of python-gtk2:
python-gtk2 depends on python (<< 2.8); however:
Package python is not installed.
python-gtk2 depends on python (>= 2.7); however:
Package python is not installed.
python-gtk2 depends on python:any (>= 2.6.6-7~).
python-gtk2 depends on python-cairo (>= 1.0.2-1.1); however:
Package python-cairo is not installed.
python-gtk2 depends on python-gobject-2 (>= 2.21.3); however:
Package python-gobject-2 is not installed.

I've just updated my previous post with more info, you need to install the newer version newer that 0.6 as older versions were python 2 and use gtk2

the newer version (>0.6) are python3 and use gtk2 hence your dependency error

What I installed is pycam-0.6.4

hmm you may need to install python 2.7 etc.