Not an answer, but realize that the Jetson is a full Linux development environment which needs extra packages installed to do more than basics. “cmake” is one such package which can be installed and which does not arrive installed by default (not everyone uses it, and an embedded environment does not typically install every option that a desktop would).
First, downloads typically come from repositories listed in the Jetson’s file “/etc/apt/sources.list”. Some of those are commented out, and only packages active from sources.list are shown when working with the “apt” or “apt-get” tools for packages (the cuda repo package adds the cuda repository, not cuda itself). The command “sudo apt update” marks a list of files from repositories, typically you’d run “sudo apt update” before any upgrade or install commands, especially if you just uncommented something in sources.list.
You’d probably want to make sure existing packages are up to date:
sudo apt update
sudo apt-get upgrade
You might want to verify nVidia-specific files are still in place (this hasn’t been an issue since R19.2):
sha1sum -c /etc/nv_tegra_release
Then you’d search for your package:
apt search cmake
You would see related packages. You might install these:
sudo apt-get install cmake cmake-curses-gui cmake-doc
(usually docs are installed in both man pages and a “/usr/share/doc/” subdirectory. You could skip cmake-doc and use docs from your laptop computer)
Then try nsight eclipse again, perhaps you just needed cmake installed at the Jetson. Even if you develop natively on Jetson, you’d still need cmake package. If the software compiled on the laptop, then it should already have any kind of configuration file for cmake to be copied over to Jetson the same way as it was copied to your laptop.