i2cdriver pip package fails to install

[zapta]

@jamesbowman, FYI.

Pip install of i2cdriver package fails with an error message and exit code. Please see details below.

ERROR: For req: i2cdriver. Invalid script entry point: <ExportEntry i2cgui = samples.i2cgui:None []> - A callable suffix is required. Cf https://packaging.python.org/specifications/entry-points/#use-for-scripts for more information.

$ python --version
Python 3.13.1

$ pip uninstall i2cdriver
WARNING: Skipping i2cdriver as it is not installed.
/projects$ pip install --no-cache-dir  i2cdriver
Collecting i2cdriver
  Downloading i2cdriver-1.0.5-py3-none-any.whl.metadata (558 bytes)
Requirement already satisfied: pyserial in /Library/Frameworks/Python.framework/Versions/3.13/lib/python3.13/site-packages (from i2cdriver) (3.5)
Downloading i2cdriver-1.0.5-py3-none-any.whl (8.1 kB)
Installing collected packages: i2cdriver
ERROR: For req: i2cdriver. Invalid script entry point: <ExportEntry i2cgui = samples.i2cgui:None []> - A callable suffix is required. Cf https://packaging.python.org/specifications/entry-points/#use-for-scripts for more information.
/projects$ echo $?
1

[tayken]

Just so that everything is together, here is the output from my test:

(.venv) tayken@wadew:~/test$ pip install greenpak                                                                                                                                             
Collecting greenpak                                                                            
  Downloading greenpak-0.0.29-py3-none-any.whl.metadata (2.1 kB)             
Collecting hackpyratebus>=0.0.6 (from greenpak)                                                
  Using cached hackPyrateBus-0.0.6-py3-none-any.whl.metadata (4.1 kB)                                                                                                                         
Collecting i2c-adapter>=0.0.4 (from greenpak)                                                                                                                                                 
  Using cached i2c_adapter-0.2.21-py3-none-any.whl.metadata (3.0 kB)                                                                                                                          
Collecting i2cdriver>=1.0.1 (from greenpak)                                                                                                                                                   
  Using cached i2cdriver-1.0.5-py3-none-any.whl.metadata (558 bytes)                                                                                                                          
Collecting intelhex>=2.3.0 (from greenpak)                                                     
  Using cached intelhex-2.3.0-py2.py3-none-any.whl.metadata (2.7 kB)
Collecting smbus2==0.4.3 (from greenpak)                                                       
  Using cached smbus2-0.4.3-py2.py3-none-any.whl.metadata (7.1 kB)
Collecting pyserial (from hackpyratebus>=0.0.6->greenpak)                                                                                                                                     
  Using cached pyserial-3.5-py2.py3-none-any.whl.metadata (1.6 kB)
Downloading greenpak-0.0.29-py3-none-any.whl (23 kB)                                                                                                                                          
Using cached smbus2-0.4.3-py2.py3-none-any.whl (11 kB)                                         
Using cached hackPyrateBus-0.0.6-py3-none-any.whl (43 kB)                                      
Using cached i2c_adapter-0.2.21-py3-none-any.whl (8.4 kB)                                                                                                                                     
Using cached i2cdriver-1.0.5-py3-none-any.whl (8.1 kB)                                         
Using cached intelhex-2.3.0-py2.py3-none-any.whl (50 kB)                  
Using cached pyserial-3.5-py2.py3-none-any.whl (90 kB)                                         
Installing collected packages: smbus2, pyserial, intelhex, i2cdriver, i2c-adapter, hackpyratebus, greenpak
ERROR: For req: i2cdriver>=1.0.1. Invalid script entry point: <ExportEntry i2cgui = samples.i2cgui:None []> - A callable suffix is required. Cf https://packaging.python.org/specifications/en
try-points/#use-for-scripts for more information.                                                                                                                                             
(.venv) tayken@wadew:~/test$ pip install greenpak                                              
Collecting greenpak                                                                            
  Using cached greenpak-0.0.29-py3-none-any.whl.metadata (2.1 kB)                              
Collecting hackpyratebus>=0.0.6 (from greenpak)                                                
  Using cached hackPyrateBus-0.0.6-py3-none-any.whl.metadata (4.1 kB)                          
Collecting i2c-adapter>=0.0.4 (from greenpak)                                                  
  Using cached i2c_adapter-0.2.21-py3-none-any.whl.metadata (3.0 kB)                           
Requirement already satisfied: i2cdriver>=1.0.1 in ./.venv/lib/python3.12/site-packages (from greenpak) (1.0.5)
Requirement already satisfied: intelhex>=2.3.0 in ./.venv/lib/python3.12/site-packages (from greenpak) (2.3.0)
Requirement already satisfied: smbus2==0.4.3 in ./.venv/lib/python3.12/site-packages (from greenpak) (0.4.3)
Requirement already satisfied: pyserial in ./.venv/lib/python3.12/site-packages (from hackpyratebus>=0.0.6->greenpak) (3.5)
Using cached greenpak-0.0.29-py3-none-any.whl (23 kB)  
Using cached hackPyrateBus-0.0.6-py3-none-any.whl (43 kB)
Using cached i2c_adapter-0.2.21-py3-none-any.whl (8.4 kB)
Installing collected packages: i2c-adapter, hackpyratebus, greenpak
Successfully installed greenpak-0.0.29 hackpyratebus-0.0.6 i2c-adapter-0.2.21

My guess is the problem is around here. But that's just a guess.

[tayken]

Actually I think this issue is already resolved in pyproject.toml file with 3e5eeb5#diff-b3c69db0a2f6847390de922e6a18901222bd4ca7d740522588d8a039b6df6eaa. The only issue is version number stayed the same, so if a new version, aka 1.0.6 is build and pushed, it should solve this issue.

[tayken]

Ran a test to verify this. As I suspected, just need to bump the version and build this package.

• Without the fix:

(.venv) tayken@wadew:~/workspace/i2cdriver (master *%|u=)$ git diff
diff --git a/python3/pyproject.toml b/python3/pyproject.toml
index 46a28a5..947145f 100644
--- a/python3/pyproject.toml
+++ b/python3/pyproject.toml
@@ -18,7 +18,7 @@ Homepage = "http://i2cdriver.com"
 Documentation = "https://i2cdriver.readthedocs.io/en/latest/"
 
 [project.scripts]
-i2cgui = "samples.i2cgui:main"
+i2cgui = "samples.i2cgui"
 
 [tool.setuptools]
 py-modules = ["i2cdriver", "EDS"]
(.venv) tayken@wadew:~/workspace/i2cdriver (master *%|u=)$ pip install python3/
Processing ./python3
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: pyserial in ./.venv/lib/python3.12/site-packages (from i2cdriver==1.0.5) (3.5)
Building wheels for collected packages: i2cdriver
  Building wheel for i2cdriver (pyproject.toml) ... done
  Created wheel for i2cdriver: filename=i2cdriver-1.0.5-py3-none-any.whl size=8144 sha256=fcf597cea3ae1772cec7d05190dcec263f276b14f993d85c6695d887477be018
  Stored in directory: /tmp/pip-ephem-wheel-cache-qdnf67oc/wheels/6e/06/29/b335a50b8816b875eb254cc6b17737870aaaf249765880bf68
Successfully built i2cdriver
Installing collected packages: i2cdriver
ERROR: For req: i2cdriver==1.0.5. Invalid script entry point: <ExportEntry i2cgui = samples.i2cgui:None []> - A callable suffix is required. Cf https://packaging.python.org/specifications/entry-points/#use-for-scripts for more information.

• With the fix:

(.venv) tayken@wadew:~/workspace/i2cdriver (master %|u=)$ git diff
(.venv) tayken@wadew:~/workspace/i2cdriver (master %|u=)$ pip install python3/
Processing ./python3
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: pyserial in ./.venv/lib/python3.12/site-packages (from i2cdriver==1.0.5) (3.5)
Building wheels for collected packages: i2cdriver
  Building wheel for i2cdriver (pyproject.toml) ... done
  Created wheel for i2cdriver: filename=i2cdriver-1.0.5-py3-none-any.whl size=8148 sha256=8ccf03619961abe11b899c5f708d4452e4f056fb932edbdf52e35fb386f55778
  Stored in directory: /tmp/pip-ephem-wheel-cache-plyxrqhg/wheels/6e/06/29/b335a50b8816b875eb254cc6b17737870aaaf249765880bf68
Successfully built i2cdriver
Installing collected packages: i2cdriver
Successfully installed i2cdriver-1.0.5

[zapta]

Do you mean that bumping this line rom 1.0.1 to 1.0.5 will solve the problem? https://github.com/zapta/greenpak/blob/d4aeb2e617ab8b05c806af20f77c3fe4b5379d60/pyproject.toml#L28

…

On Wed, May 21, 2025 at 10:14 AM Taylan Ayken ***@***.***> wrote: *tayken* left a comment (jamesbowman/i2cdriver#70) <#70 (comment)> Ran a test to verify this. As I suspected, just need to bump the version and build this package. - Without the fix: (.venv) ***@***.***:~/workspace/i2cdriver (master *%|u=)$ git diff diff --git a/python3/pyproject.toml b/python3/pyproject.toml index 46a28a5..947145f 100644 --- a/python3/pyproject.toml +++ b/python3/pyproject.toml @@ -18,7 +18,7 @@ Homepage = "http://i2cdriver.com" Documentation = "https://i2cdriver.readthedocs.io/en/latest/" [project.scripts] -i2cgui = "samples.i2cgui:main" +i2cgui = "samples.i2cgui" [tool.setuptools] py-modules = ["i2cdriver", "EDS"] (.venv) ***@***.***:~/workspace/i2cdriver (master *%|u=)$ pip install python3/ Processing ./python3 Installing build dependencies ... done Getting requirements to build wheel ... done Preparing metadata (pyproject.toml) ... done Requirement already satisfied: pyserial in ./.venv/lib/python3.12/site-packages (from i2cdriver==1.0.5) (3.5) Building wheels for collected packages: i2cdriver Building wheel for i2cdriver (pyproject.toml) ... done Created wheel for i2cdriver: filename=i2cdriver-1.0.5-py3-none-any.whl size=8144 sha256=fcf597cea3ae1772cec7d05190dcec263f276b14f993d85c6695d887477be018 Stored in directory: /tmp/pip-ephem-wheel-cache-qdnf67oc/wheels/6e/06/29/b335a50b8816b875eb254cc6b17737870aaaf249765880bf68 Successfully built i2cdriver Installing collected packages: i2cdriver ERROR: For req: i2cdriver==1.0.5. Invalid script entry point: <ExportEntry i2cgui = samples.i2cgui:None []> - A callable suffix is required. Cf https://packaging.python.org/specifications/entry-points/#use-for-scripts for more information. - With the fix: (.venv) ***@***.***:~/workspace/i2cdriver (master %|u=)$ git diff (.venv) ***@***.***:~/workspace/i2cdriver (master %|u=)$ pip install python3/ Processing ./python3 Installing build dependencies ... done Getting requirements to build wheel ... done Preparing metadata (pyproject.toml) ... done Requirement already satisfied: pyserial in ./.venv/lib/python3.12/site-packages (from i2cdriver==1.0.5) (3.5) Building wheels for collected packages: i2cdriver Building wheel for i2cdriver (pyproject.toml) ... done Created wheel for i2cdriver: filename=i2cdriver-1.0.5-py3-none-any.whl size=8148 sha256=8ccf03619961abe11b899c5f708d4452e4f056fb932edbdf52e35fb386f55778 Stored in directory: /tmp/pip-ephem-wheel-cache-plyxrqhg/wheels/6e/06/29/b335a50b8816b875eb254cc6b17737870aaaf249765880bf68 Successfully built i2cdriver Installing collected packages: i2cdriver Successfully installed i2cdriver-1.0.5 — Reply to this email directly, view it on GitHub <#70 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAQVMQKKG6AD5NEXWCYOC6D27SYA7AVCNFSM6AAAAAB5A56AASVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDQOJYGY4DIMBXHA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[tayken]

No need to do anything in greenpak as greenpak already uses the latest version of i2cdriver which is 1.0.5. i2cdriver package needs to be bumped up to 1.0.6 and pushed.

[zapta]

Ok, thanks.

…

On Wed, May 21, 2025 at 5:39 PM Taylan Ayken ***@***.***> wrote: *tayken* left a comment (jamesbowman/i2cdriver#70) <#70 (comment)> No need to do anything in greenpak as greenpak already uses the latest version of i2cdriver which is 1.0.5. i2cdriver package needs to be bumped up to 1.0.6 and pushed. — Reply to this email directly, view it on GitHub <#70 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAQVMQMBCH4IBXB2IKOJOZD27UMFBAVCNFSM6AAAAAB5A56AASVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDQOJZGU4DOMRRGY> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[AnnikaCodes]

This issue is still present, and the latest version on PyPI is 1.0.5. I would really appreciate if this issue could be fixed so that the I2Cdriver hardware can be used with Python.

$ pip install i2cdriver                        
Collecting i2cdriver
  Using cached i2cdriver-1.0.5-py3-none-any.whl.metadata (558 bytes)
Collecting pyserial (from i2cdriver)
  Using cached pyserial-3.5-py2.py3-none-any.whl.metadata (1.6 kB)
Using cached i2cdriver-1.0.5-py3-none-any.whl (8.1 kB)
Using cached pyserial-3.5-py2.py3-none-any.whl (90 kB)
Installing collected packages: pyserial, i2cdriver
ERROR: For req: i2cdriver. Invalid script entry point: <ExportEntry i2cgui = samples.i2cgui:None []> - A callable suffix is required. Cf https://packaging.python.org/specifications/entry-points/#use-for-scripts for more information.

[jamesbowman]

Believe this is fixed in new release 1.0.6

https://pypi.org/project/i2cdriver/1.0.6/

[tayken]

Yes, the new release solves this issue. I think we close this.

• Installing it by itself:

(.venv) tayken@wadew:~$ pip install i2cdriver
Collecting i2cdriver
  Using cached i2cdriver-1.0.6-py3-none-any.whl.metadata (558 bytes)
Collecting pyserial (from i2cdriver)
  Using cached pyserial-3.5-py2.py3-none-any.whl.metadata (1.6 kB)
Using cached i2cdriver-1.0.6-py3-none-any.whl (8.1 kB)
Using cached pyserial-3.5-py2.py3-none-any.whl (90 kB)
Installing collected packages: pyserial, i2cdriver
Successfully installed i2cdriver-1.0.6 pyserial-3.5

• Installing it as a dependency:

(.venv) tayken@wadew:~$ pip install greenpak
Collecting greenpak
  Using cached greenpak-0.0.30-py3-none-any.whl.metadata (2.1 kB)
Collecting hackpyratebus>=0.0.6 (from greenpak)
  Using cached hackPyrateBus-0.0.6-py3-none-any.whl.metadata (4.1 kB)
Collecting i2c-adapter>=0.0.4 (from greenpak)
  Using cached i2c_adapter-0.2.21-py3-none-any.whl.metadata (3.0 kB)
Collecting i2cdriver>=1.0.1 (from greenpak)
  Downloading i2cdriver-1.0.6-py3-none-any.whl.metadata (558 bytes)
Collecting intelhex>=2.3.0 (from greenpak)
  Using cached intelhex-2.3.0-py2.py3-none-any.whl.metadata (2.7 kB)
Collecting smbus2==0.4.3 (from greenpak)
  Using cached smbus2-0.4.3-py2.py3-none-any.whl.metadata (7.1 kB)
Collecting typing-extensions>=4.7.1 (from greenpak)
  Using cached typing_extensions-4.14.0-py3-none-any.whl.metadata (3.0 kB)
Collecting pyserial (from hackpyratebus>=0.0.6->greenpak)
  Using cached pyserial-3.5-py2.py3-none-any.whl.metadata (1.6 kB)
Using cached greenpak-0.0.30-py3-none-any.whl (23 kB)
Using cached smbus2-0.4.3-py2.py3-none-any.whl (11 kB)
Using cached hackPyrateBus-0.0.6-py3-none-any.whl (43 kB)
Using cached i2c_adapter-0.2.21-py3-none-any.whl (8.4 kB)
Downloading i2cdriver-1.0.6-py3-none-any.whl (8.1 kB)
Using cached intelhex-2.3.0-py2.py3-none-any.whl (50 kB)
Using cached typing_extensions-4.14.0-py3-none-any.whl (43 kB)
Using cached pyserial-3.5-py2.py3-none-any.whl (90 kB)
Installing collected packages: smbus2, pyserial, intelhex, typing-extensions, i2cdriver, i2c-adapter, hackpyratebus, greenpak
Successfully installed greenpak-0.0.30 hackpyratebus-0.0.6 i2c-adapter-0.2.21 i2cdriver-1.0.6 intelhex-2.3.0 pyserial-3.5 smbus2-0.4.3 typing-extensions-4.14.0