Lesson 6: Hardhat Simple Storage - CAN'T INSTALL THE DEVDEPENDENCIES

[Avelous]

when i was setting up hardhat and ran npx hardhat I didn't get the fourth question asking to install the devdependencies, so I ran it manually by using npm install --save-dev @nomiclabs/hardhat-ethers ethers @nomiclabs/hardhat-waffle ethereum-waffle chai

I got the following errors:

npm WARN config global `--global`, `--local` are deprecated. Use `--location=global` instead.
npm WARN deprecated ganache-core@2.13.2: ganache-core 
is now ganache; visit https://trfl.io/g7 for details  
npm WARN deprecated ganache-core@2.13.2: ganache-core 
is now ganache; visit https://trfl.io/g7 for details  
npm notice Beginning October 4, 2021, all connections 
to the npm registry - including for package installation - must use TLS 1.2 or higher. You are currently using plaintext http to connect. Please visit the GitHub 
blog for more information: https://github.blog/2021-08-23-npm-registry-deprecating-tls-1-0-tls-1-1/
npm WARN deprecated testrpc@0.0.1: testrpc has been renamed to ganache-cli, please use this package from now on.
npm notice Beginning October 4, 2021, all connections 
to the npm registry - including for package installation - must use TLS 1.2 or higher. You are currently using plaintext http to connect. Please visit the GitHub 
blog for more information: https://github.blog/2021-08-23-npm-registry-deprecating-tls-1-0-tls-1-1/
npm WARN deprecated har-validator@5.1.5: this library 
is no longer supported
npm WARN deprecated querystring@0.2.0: The querystring API is considered Legacy. new code should use the URLSearchParams API instead.
npm WARN deprecated uuid@3.4.0: Please upgrade  to version 7 or higher.  Older versions may use Math.random() in certain circumstances, which is known to be problematic.  See https://v8.dev/blog/math-random for details.
npm WARN deprecated request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142
npm WARN deprecated @ensdomains/ens@0.4.5: Please use 
@ensdomains/ens-contracts
npm WARN deprecated @ensdomains/resolver@0.2.4: Please use @ensdomains/ens-contracts

I've updated node and npm, still having same issues

[alymurtazamemon]

@Avelous there are typo mistakes, like this one @omiclabs/hardhat-waffle. It should be nomiclabs.

[Avelous]

I edited the typo. I've now put in the original error. thanks

[alymurtazamemon]

@Avelous these are just warnings.

Are you facing any issue?

[Avelous]

yes, some of the dependencies are not installing. I've tried installing each one separately. I was able to install ethers, chai, and @nomiclabs/hardhat-ethers. But the other two, @nomiclabs/hardhat-waffle and ethereum-waffle aren't installing

[Avelous]

I've been able to resolve it, thank you. I don't think i stated the error exactly, my bad

[Avelous]

Resolved!!
I checked and the actual error was

Cannot read properties of null (reading 'pickAlgorithm')

I cleared the cache using npm cache clear --force and i was able to install the dependencies. Apparently, I didn't state the exact error in my question.