在Heroku上使用Imagemagick部署Go应用

Question

I've been trying to deploy a simple Go app with imagick This requires Imagemagick. I've tried using the multi buildpack to install Imagemagick and run my app. This is how my .buildpack looks like:

https://github.com/mcollina/heroku-buildpack-imagemagick
https://github.com/kr/heroku-buildpack-go.git

And this is the error I see on Heroku:

    Fetching repository, done.
Counting objects: 170, done.
Compressing objects: 100% (154/154), done.
Writing objects: 100% (169/169), 170.13 KiB | 0 bytes/s, done.
Total 169 (delta 21), reused 0 (delta 0)

-----> Fetching custom git buildpack... done
-----> Multipack app detected
=====> Downloading Buildpack: https://github.com/mcollina/heroku-buildpack-imagemagick
=====> Detected Framework:
-----> Installing libpng 1.5.14
       Download completed
       Installation completed
-----> Installing imagemagick 6.8.2-3
       Download completed
       Installation completed
-----> Building runtime environment for imagemagick
=====> Downloading Buildpack: https://github.com/kr/heroku-buildpack-go.git
=====> Detected Framework: Go
-----> Installing go1.3... done
-----> Running: godep go install -tags heroku ./...
# github.com/gographics/imagick/imagick
error: 'RemoveAlphaChannel' undeclared (first use in this function)
error: 'FlattenAlphaChannel' undeclared (first use in this function)
godep: go exit status 2

 !     Push rejected, failed to compile Multipack app

To [e-mail]:philosoraptor-me.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to

Answer 1

I ended up using the image package from Go's excellent standard lib instead of depending on imagemagick.

This also taught me a valuable lesson about looking for a solution as close to the problem as possible than trying to solve it with a tool that I'm most familiar with.