I'm having the exact same issue on Mac with Istio >= 1.6

wrong: https://github.com/istio/istio/releases/download/1.6.3/istio-1.6.3-osx-amd64.tar.gz
correct: https://github.com/istio/istio/releases/download/1.6.3/istio-1.6.3-osx.tar.gz

Until the fix gets merged you can use following workaround:

asdf plugin update istioctl pull/3/head
asdf install istioctl 1.6.3

I'm on Mac OS X and I'm experiencing the same issue as @shusugmt. For Mac and Windows versions, arch_type should not be used.

I noticed the author (@shosti) of #3 closed their pull request and it was never merged. It would be great if that change or a similar one can be incorporated to address this issue.

Oh I closed my PR in favor of #2. Is this still an issue?

@shosti yes the problem still exists and your PR is valid.

@rafik8 As mentioned this is still an issue for non-linux installs. Can we get #3 or #4 merged which both account for OS when building the download URL?

On the OSX a spurious architecture was getting put in the URL:

asdf install istioctl 1.6.8
Downloading istioctl from https://github.com/istio/istio/releases/download/1.6.8/istio-1.6.8-osx-amd64.tar.gz

bin_install_path: /Users/nchristopher/.asdf/installs/istioctl/1.6.8/bin
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100     9  100     9    0     0     33      0 --:--:-- --:--:-- --:--:--    33
tar: Error opening archive: Unrecognized archive format

The branch 3 does work though. +1 on the merge.

As much as I prefer to use the official registered plugins, I've given up on this. Seems to have been abandoned given 5 months with no fix?

https://github.com/appfolio/asdf-istioctl seems to work; perhaps we should get the "official" registered plugin replaced with one that is maintained; or move to a fork of this repo?

As much as I prefer to use the official registered plugins, I've given up on this. Seems to have been abandoned given 5 months with no fix?

https://github.com/appfolio/asdf-istioctl seems to work; perhaps we should get the "official" registered plugin replaced with one that is maintained; or move to a fork of this repo?

IDK what was going on with this one, but it caused all kinds of "permission denied" errors in folders that ASDF should have no business touching.