Cannot install truffle. Node.js and npm are installed

Question

I currently have

node 12.21.0 + npm 6.14.41 + macos big sur 11.2.1 + ganache 2.5.4 + command line for xtools 12.4

I read online that truffle does not support node v13, so i uninstalled the one i had (v15 or sthing) and switched to version 12.21.1.

The latest npm and node installations were done from their website (pkg files), not brew, because i do not know how to NOT install the latest versions with brew.

Here's 2 screenshots of attempt #1:

and

Here's attempt #2

I have been looking for an answer for HOURS, and nothing works. Save my life please.

edit: someone told me to check if /Users/aris/.npm-global/bin is in my path, but i have no idea how to do it. I googled it and tried a few instructions that put that directory in my path, but nothing changed.

Truffle also seems to be installed in my hard drive (as you can see at the screenshot bellow), even though when i check at the terminal if its installed, or try to call a command, i get that "command not found: truffle":

EDIT#2342 (excuse me for this btw) i checked and truffle is NOT in my path (screenshot bellow). Should i manually try and find the truffle executable file or sthing?

Answer 1

try npx truffle init after you install npm and truffle

Answer 2

Tried upvoting @Praktisch's answer, but I don't have enough reputation yet.

npx worked for me. I had the same problem. Switched from zsh to bash. Added folders to execution path. No luck.

If I type npx before any of the truffle commands, they work. For example npx truffle init, npx truffle compile, etc.

Answer 3

Firstly, you can try these steps to install the version you'd need with brew: how to install node any version with brew. In any case, that can come handy.

About the issue you are facing, it's an "old" problem that has no one-trick solution, check here to see some attempts. can't install truffle on Mac OSX -- if are using a more recent Mac OS version, you don't have some compatibilities issues they present there.

You should try npm install -g truffle@beta and check command-line tools are working properly, too. In case that does not solve it, try moving to yet another version... it's a pain but sometimes there is no better choice.

PS: Also, note that relevant info, in this case, means the system you are using, your stack, etc. Anything that could potentially have an influence on the issue. Preferably in text format similar to the GitHub issue I linked. Have that in mind.

Answer 4

To install on macOS you should have a working C/C++ compiler installed and usually the global installation needs root rights, so use sudo.

1. Install command line developer tools

   https://developer.apple.com/downloads/index.action

   Download 'Command Line Tools for Xcode'.

   Depending on your current OS version (the best is to install newest version). You will be asked for your Apple Developer Login during the install process.

2. Install truffle global:

   $ sudo npm install -g truffle

3. Ensure that all node dependencies have been updated:

   $ sudo npm update -g

4. You should also install Ganache:

   $ sudo npm install -g ganache-cli

In the case all this does not work it is also possible to install truffle locally in your project. In this case you install without the '-g' flag and call:

`$ ./node_modules/.bin/truffle`

Expected result:

$ ./node_modules/.bin/truffle -v
Truffle v5.1.43 - a development framework for Ethereum

Usage: truffle <command> [options]

Commands:
  build     Execute build pipeline (if configuration present)
  compile   Compile contract source files
  config    Set user-level configuration options
  console   Run a console with contract abstractions and commands available
  create    Helper to create new contracts, migrations and tests
  debug     Interactively debug any transaction on the blockchain
  deploy    (alias for migrate)
  develop   Open a console with a local development blockchain
  exec      Execute a JS module within this Truffle environment
  help      List all commands or provide information about a specific command
  init      Initialize new and empty Ethereum project
  install   Install a package from the Ethereum Package Registry
  migrate   Run migrations to deploy contracts
  networks  Show addresses for deployed contracts on each network
  obtain    Fetch and cache a specified compiler
  opcode    Print the compiled opcodes for a given contract
  publish   Publish a package to the Ethereum Package Registry
  run       Run a third-party command
  test      Run JavaScript and Solidity tests
  unbox     Download a Truffle Box, a pre-built Truffle project
  version   Show version number and exit
  watch     Watch filesystem for changes and rebuild the project automatically

See more at http://truffleframework.com/docs

Answer 5

There's homebrew which worked for me here

brew install truffle