feat(new): support to skip install

[zanminkian]

If I run command nest new some-project (some one new may don't know --skip-install option), nest-cli always force me to select a package manager. I have to press ctrl + c to skip, which is not elegant. Otherwise I have to waste my time to wait it.

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[kamilmysliwiec]

Should we update this new option to say "none (skip installing packages)" instead of just "none" as one (newcomers to JS world) can think there's a "none" package manager? 😅

[zanminkian]

Should we update this new option to say "none (skip installing packages)" instead of just "none" as one (newcomers to JS world) can think there's a "none" package manager? 😅

@kamilmysliwiec Good idea. Done now.

[zanminkian]

@micalevisk I found it's not very elegant. I will convert this PR to draft. The elegant way is asking user 2 questions:

1. Which package manager would you like to use?

• npm
• yarn
• pnpm

2. Install packages now?

• Yes
• No

The first question is to generate README.md. The second question is to skip installing or not.

What your opinion? @micalevisk @kamilmysliwiec @jmcdo29

[micalevisk]

having two questions is better for sure.

[zanminkian]

@micalevisk I found it's not very elegant. I will convert this PR to draft. The elegant way is asking user 2 questions:

1. Which package manager would you like to use?

• npm
• yarn
• pnpm

2. Install packages now?

• Yes
• No

The first question is to generate README.md. The second question is to skip installing or not.

What your opinion? @micalevisk @kamilmysliwiec @jmcdo29

After PR #1457 being accepted, I will implement this feature.

[kamilmysliwiec]

IMO the fewer questions we could ask the better (to make the scaffolding process as straightforward & quick as possible)

[zanminkian]

IMO the fewer questions we could ask the better (to make the scaffolding process as straightforward & quick as possible)

Got it. And I found #1457 has code conflict with this PR. After that PR being accepted, I will rebase and ask for review again.

[micalevisk]

to make the scaffolding process as straightforward & quick as possible

that's a good point acctually. Then, I go back to https://github.com/nestjs/nest-cli/pull/1458#discussion_r772528899 xD

[kamilmysliwiec]

This should be feasible now (since we merged https://github.com/nestjs/nest-cli/pull/1803)