[Yarn] Error When Installing Package: "command not found: patch-package"

[garygcchiu]

Hey,

I've been trying to install this package into my Expo, React Native application using yarn3 for awhile now and keep running into this error when running yarn install:

➤ YN0000: ┌ Link step
➤ YN0007: │ @expensify/react-native-live-markdown@npm:0.1.199 [12bc8] must be built because it never has been before or the last one failed
➤ YN0009: │ @expensify/react-native-live-markdown@npm:0.1.199 [12bc8] couldn't be built successfully (exit code 127, logs can be found here: /private/var/folders/04/d5gndjrd4bg3wcd6d1n_h8vr0000gn/T/xfs-2097338f/build.log)
➤ YN0007: │ my-app@workspace:apps/expo must be built because it never has been before or the last one failed
➤ YN0000: └ Completed in 1s 379ms
➤ YN0000: Failed with errors in 3s 125ms

The error is:

# This file contains the result of Yarn building a package (@expensify/react-native-live-markdown@virtual:12bc83a8d977991f5f8523e8f1c7a17dd62498e860bf155e6cb3aecba6f13156324543dabc26866049dffa60c35571997e12ecfc029a5a1800346a514a3fad13#npm:0.1.199)
# Script name: postinstall

command not found: patch-package

I've tried:

• Adding "patch-package": "^8.0.0", "postinstall-postinstall": "^2.1.0", to my package.json and then try re-installing. Still same error.
• I am using a yarn monorepo, and have tried including both packages above into my root package.json, as well as my app/expo package.json. Still gives the error.

The version of react-native-live-markdown I have installed is 0.1.199.

Is there something else I should try?

[garygcchiu]

Created a quick error reproduction repo here: https://github.com/garygcchiu/react-native-live-markdown-yarn-error-repro

I am using yarn 3.4.1 in this case. I believe it may have something to do with how yarn2+ has native support for patching: https://www.npmjs.com/package/patch-package#yarn-v2

[garygcchiu]

I was able to workaround this by creating a patch of my own to remove the postinstall:

yarn patch @expensify/react-native-live-markdown

• Remove the postinstall script from the package.json

➜ yarn patch-commit -s /private/var/folders/...

yarn install

Resulting patch:

diff --git a/package.json b/package.json
index 38407d38b3172dbb6157a20cea9eb6cf960872f9..c4b435e291ac499580233a0ca206c37cbe93b470 100644
--- a/package.json
+++ b/package.json
@@ -37,8 +37,7 @@
     "clean": "del-cli android/build example/android/build example/android/app/build example/ios/build lib",
     "prepare": "bob build",
     "build:watch": "nodemon --watch src --ext .ts,.tsx,.css --exec \"rm -f .build_complete && npm run prepare && npm pack && touch .build_complete\"",
-    "release": "release-it",
-    "postinstall": "patch-package"
+    "release": "release-it"
   },
   "keywords": [
     "react-native",

[tomekzaw]

@garygcchiu Thanks for reporting this issue. Someone from Live Markdown team will take a look at this shortly.

[nandorojo]

Breaks on yarn 4 as well