Fix dependency conflict first:
Run npm install --legacy-peer-deps

If gyp error persists:

Ensure build tools are installed for your OS.

Try npm config set node_gyp $(which node-gyp) then npm install --legacy-peer-deps again.

If still failing, provide these:

1. Full package.json

2. Exact Node & npm versions (node -v, npm -v)

3. Complete error log from npm-cache/_logs/

Thanks very much
I just tried and that works perfect.

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There are actually two separate problems in your logs. Solving them one by one usually fixes the install failure completely. I will break them down as clearly as possible.
1. Peer dependency conflict
Your project is using React 18 but one of your packages expects React 17. This is why npm shows the ERESOLVE error. It is not a bug in your system, it is a version mismatch between dependencies.

You can fix this in three ways.

A. Update or replace the package that still requires React 17. Check if “some-package” has a version that supports React 18.

B. If you want to force the install temporarily, run:
npm install –legacy-peer-deps
This bypasses peer dependency checks, but use it only if you understand the risk.

C. Remove the old package completely, run npm install, then install an alternative package that supports React 18.
2. node-gyp build error
This is a native build error and is unrelated to the React dependency conflict. Native modules need a build environment to compile. The fix depends on your operating system.

Windows:
Install the official build tools.
Run this in an elevated PowerShell:
npm install –global windows-build-tools
Or install these manually: Python, Visual Studio Build Tools, C++ workload.

Linux:
Install the required build packages:
sudo apt install build-essential python3 make gcc gplusplus

After installing the build tools, delete the node_modules folder and the package-lock file, then install again:
rm -rf node_modules package-lock.json
npm install
3. What extra information you can share
If the problem continues after trying the steps above, the most useful information would be:

npm version
node version
output of npm config list
full terminal output from a fresh npm install attempt
your operating system and architecture

With these details it becomes much easier to pinpoint the exact cause.

Let me know which OS you are on and I can give you the exact commands for your setup.