Category / Troubleshooting

by Maik

Installing Delve on OS X / macOS fails

While trying to debug Go scripts with Visual Studio, I stumbled upon issues configuring Delve on macOS. Delve is a full featured debugging tool for the Go programming language and Visual Studio Code seems to make us of it. Unfortunately the installation might not be as straightforward as described in the official installation documentation. The Brew installation fails while / after generating certificates:

==> Installing delve from go-delve/delve
==> Downloading https://github.com/derekparker/delve/archive/v1.0.0-rc.2.tar.gz
Already downloaded: /Users/beematik/Library/Caches/Homebrew/delve-1.0.0-rc.2.tar.gz
security: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.
==> Generating dlv-cert
==> openssl req -new -newkey rsa:2048 -x509 -days 3650 -nodes -config dlv-cert.cfg -extensions codesign_reqext -batch -out dlv-cert.c
==> [SUDO] Installing dlv-cert as root
==> sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain dlv-cert.cer
Last 15 lines from /Users/[...]/Library/Logs/Homebrew/delve/02.sudo:
2017-12-31 11:52:35 +0100

sudo
security
add-trusted-cert
-d
-r
trustRoot
-k
/Library/Keychains/System.keychain
dlv-cert.cer


If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
https://github.com/go-delve/homebrew-delve/issues

These open issues may also help:
Upgrade to delve fails https://github.com/go-delve/homebrew-delve/issues/20

Whatever the reason of this issue might be, there is a suitable workaround available:

cd $HOME/Library/Caches/Homebrew
tar xf delve-*.gz
cd delve-*
sh scripts/gencert.sh
# Type in your sudo password
brew install go-delve/delve/delve

References

  • https://github.com/derekparker/delve/blob/master/Documentation/installation/osx/install.md
  • https://github.com/go-delve/homebrew-delve/issues/19#issuecomment-330442033

Affected System

  • OS X El Capitan 10.11.6
  • Homebrew 1.4.1
  • Delve 1.0.0-rc.2
by Maik

Debian Recovery Mode: Turn on networking

Sometime things go wrong… and sometimes things go terribly wrong. So you might find yourself in the depths of your favorite distribution’s recovery mode late in the night. Depending on the nature of your Linux distribution you might be served with the possibility to enable networking foresighted (e.g. via GRUB). Or… there is no such option at all and you are on your own to figure out how to fix your failed update, missing dependencies or incompatible packages — all that, without the plethora of solutions offered by the almighty internet.

Fortunately there is a straight-forward way to get your Ethernet bits flowing:

ifconfig eth0 up
dhclient eth0

# Validate local IP / network config
ifconfig