Use system GPG python bindings

bmaptool was incorrectly installing the gpg bindings from PyPi. This is
incorrect however, since the gpg module must match the system GPG
library and is packaged with it. Modify the dependencies, instructions,
and CI to reflect this

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>

Author: JPEWdev

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
         run: |
-          sudo apt-get install -y pbzip2 pigz lzop liblz4-tool libgpgme11-dev
+          sudo apt-get install -y pbzip2 pigz lzop liblz4-tool libgpgme11-dev python3-gpg
           python -m pip install --upgrade pip
           pip install build
       - name: Build package

README.md

@@ -316,9 +316,11 @@ More details can be found [in the OpenZFS documentation](https://openzfs.github.
 changes to the project, first create a new virtual environment and activate it:
 
 ```bash
-python3 -m venv .venv
+python3 -m venv .venv --system-site-packages
 . .venv/bin/activate
 ```
+Note: --system-site-packages is required to give the virtual environment
+access to the system GPG python bindings
 
 Next install the project in editable mode with development dependencies:
 

pyproject.toml

@@ -3,7 +3,10 @@ name = "bmaptool"
 description = "BMAP tools"
 dynamic = ["version"]
 dependencies = [
-    "gpg >= 1.10.0",
+    # NOTE: gpg is not installed because it must come from the system GPG package
+    # (e.g. python3-gpg on Ubuntu) and not from PyPi. The PyPi version is very old
+    # and no longer functions correctly
+    #"gpg >= 1.10.0",
 ]
 required-python = ">= 3.8"
 authors = [

src/bmaptool/CLI.py

@@ -204,7 +204,8 @@ def verify_detached_bmap_signature(args, bmap_obj, bmap_path):
         error_out(
             'cannot verify the signature because the python "gpg" '
             "module is not installed on your system\nPlease, either "
-            "install the module or use --no-sig-verify"
+            "install system GPG python bindings (e.g. python3-gpg) or use "
+            "--no-sig-verify"
         )
 
     try:
@@ -254,7 +255,7 @@ def verify_clearsign_bmap_signature(args, bmap_obj):
             'cannot verify the signature because the python "gpg"'
             "module is not installed on your system\nCannot extract "
             "block map from the bmap file which has clearsign format, "
-            "please, install the module"
+            "please install system GPG python bindings (e.g. python3-gpg)"
         )
 
     try: