pod-install hangs after Pod installation complete!

[geraintwhite]

Description

When running npx pod-install, the command hangs for a long time after displaying Pod installation complete!.

If I run time pod install the command takes 7.5s. However, if I run time npx pod-install the command takes 1m27.3s.

Expected Behavior

Command should exit after displaying Pod installation complete!.

Observed Behavior

Command hangs for about 1m20s after displaying Pod installation complete!.

Environment

Node version: v12.4.0
NPM version: 6.9.0
Cocoapods version: 1.8.4

Reproducible Demo

git clone https://github.com/grit96/pod-install-test
cd pod-install-test
npx pod-install

[EvanBacon]

The repro runs in 1.75s:

evanbacon@Evans-MBP pod-install-test % time npx pod-install
npx: installed 1 in 0.668s
Scanning for pods...
1.9.3
> pod install
Analyzing dependencies
Downloading dependencies
Generating Pods project
Integrating client project
Pod installation complete! There are 0 dependencies from the Podfile and 0 total pods installed.
npx pod-install  1.75s user 0.68s system 101% cpu 2.395 total
evanbacon@Evans-MBP pod-install-test % 

[brentvatne]

@grit96 - could you have been experiencing an intermittent internet connectivity issue?

[geraintwhite]

I think it's related to HTTP proxies. If I run pod install or npx pod-install without proxies they both finish quickly, whereas with HTTP proxies enabled (through http_proxy and https_proxy environment variables) pod install finishes quickly but npx pod-install hangs.

[EvanBacon]

I think http proxy is out of scope for this particular tool. Open to PRs if you’d like to contribute!