Linux - workaround for pinentry [ERR 83918950 Inappropriate ioctl for device]

My workaround will results in a terminal command that will ask for your GPG password, it'll not be a working popup from pinentry.

I did this because I was having this error with pinentry:

# I'm running Manjaro KDE 21.3.5
$ echo GETPIN | pinentry
OK Pleased to meet you
S ERROR curses.isatty 83918950
ERR 83918950 Inappropriate ioctl for device <Pinentry>

I'll assume that if you got to this point, you've already created your GPG key and know something about the gnupg and git config files.

Here's what I've in my configs:

# .zshrc, .bashrc...
export GPG_TTY=$(tty)

# gpg-agent.conf
pinentry-program /usr/bin/pinentry-curses
max-cache-ttl 60480000
default-cache-ttl 60480000

# gpg.conf
use-agent
pinentry-mode loopback

default-key  XXXXXXXXXXXXXXXX

# .gitconfig
[user]
    name = xxx
    email = xxx
    signingkey = XXXXXXXXXXXXXXXX
[gpg]
    program = gpg2
[commit]
    gpgsign = true

Solution

We are going to create a script to be call by an alias:

# .zshrc, .bashrc...
alias unlock_gpg="~/.unlock_gpg.sh"

# ~/.unlock_gpg.sh  <- create this file and add the script below
current_dir=$(pwd)
cd ~/.unlock_gpg
git add .
git commit -m "abc"
git reset --soft HEAD~1
cd $current_dir

# Run this command:
$ chmod +x ~/.unlock_gpg.sh

Now create a folder with a git repo following the steps below:

$ mkdir ~/.unlock_gpg/
$ cd ~/.unlock_gpg/
$ git init
$ touch file.txt
$ git add .
$ git commit -m "first commit"
# if gpg ask for your password, provide it
$ echo 'hi' > file.txt

# This will reset your gpg agent, so you can test it below.
$ gpgconf --reload gpg-agent

Now try it out:

$ unlock_gpg
# Now you should see a password prompt like this:
Enter passphrase:
# Just enter your password and sign your commits as you wish

If you have a better/definitive solution please comment.