Can't run a twine upload due to version problem

[luriol]

I'm trying to upload a distrubtion of a package to pypy using python3 -m twine upload dist/.16

I get an error saying
"
InvalidDistribution: Metadata is missing required fields: Name, Version.
"
If I unpack the whl file and look at the METADATA file I notice that an exact older version which uploaded correctly had the line

Metadata-Version: 2.1

When I currently try to build the package it won't upload (and also fails a twine check). When I look at the METADATA from the newer version is says

Metadata-Version: 2.3

If I simply change 2.3 to 2.1 I can rezip the whl package and it now passes the twine check and everything is fine.

How can I fix this?

[di]

Hi, are you using the latest version of twine?

[stecohen]

I have the same issue - updating to the latest version of twine (5.0.0) did not help

[di]

Are you using the latest version of twine?

[stecohen]

Yes, as per my initial post

[stecohen]

I had to downgrade python from 3.11.7 to 3.10.10 to fix this issue

[umarbutler]

On 15 March, I updated a package using py -m twine upload --repository pypi dist/* and experienced no issues. Today, I built a new package, seemingly having not upgraded any of my build tools (although perhaps it is possible I did?) and experienced this issue: InvalidDistribution: Metadata is missing required fields: Name, Version.. This persisted even after upgrading my twine and trying Python 11 instead of 12. Only after upgrading pkginfo was the issue fixed. A higher version of pkginfo should be a requirement to ensure that this doesn't happen to others. At the very least, twine's error message should mention that upgrading pkginfo will probably solve the issue.

Related issues I have located are as follows:

• Check command doesn't recognize metadata 2.3 pypa/twine#1059
• Can't run a twine upload due to version problem #15611
• Twine should require pkginfo > 1.10 pypa/twine#1070
• Successfully build *.whl and *.tar.gz, but cannot upload them through twine pypa/packaging-problems#735

[LightOfHeaven1994]

@umarbutler thanks a lot, bumping pkginfo helped us to resolve the issue ❤️

[LtStarbuck1030]

On 15 March, I updated a package using py -m twine upload --repository pypi dist/* and experienced no issues. Today, I built a new package, seemingly having not upgraded any of my build tools (although perhaps it is possible I did?) and experienced this issue: InvalidDistribution: Metadata is missing required fields: Name, Version.. This persisted even after upgrading my twine and trying Python 11 instead of 12. Only after upgrading pkginfo was the issue fixed. A higher version of pkginfo should be a requirement to ensure that this doesn't happen to others. At the very least, twine's error message should mentioned that upgrading pkginfo will probably solve the issue.

Related issues I have located are as follows:

* [Check command doesn't recognize metadata 2.3 pypa/twine#1059](https://github.com/pypa/twine/issues/1059)

* [Can't run a twine upload due to version problem #15611](https://github.com/pypi/warehouse/issues/15611)

* [Twine should require pkginfo > 1.10 pypa/twine#1070](https://github.com/pypa/twine/issues/1070)

* [Successfully build *.whl and *.tar.gz, but cannot upload them through twine pypa/packaging-problems#735](https://github.com/pypa/packaging-problems/issues/735)

This worked perfectly. Ashamed of how long it took me to stumble on this response. Thank you <3

[pultarmi]

This is still a problem with twine==5.1.1, pkginfo==1.11.1, hatchling==1.25.0, python=3.12.4 on Ubuntu 24. I tried multiple versions of the packages and Python, it's always the same error message

ERROR    InvalidDistribution: Metadata is missing required fields: Name, Version.                                                                                                 
         Make sure the distribution includes the files where those fields are specified, and is using a supported Metadata-Version: 1.0, 1.1, 1.2, 2.0, 2.1, 2.2.

There is Metadata-Version: 2.3 isnide PKG_INFO in dist folder, so I guess that hatchling uses a newer metadata format than what twine supports.

As I see it, the only working workaround is to modify the header in PKG_INFO manually.

[dmitrycrivoy]

This is still a problem with twine==5.1.1, pkginfo==1.11.1, hatchling==1.25.0, python=3.12.4 on Ubuntu 24. I tried multiple versions of the packages and Python, it's always the same error message

ERROR    InvalidDistribution: Metadata is missing required fields: Name, Version.                                                                                                 
         Make sure the distribution includes the files where those fields are specified, and is using a supported Metadata-Version: 1.0, 1.1, 1.2, 2.0, 2.1, 2.2.

There is Metadata-Version: 2.3 isnide PKG_INFO in dist folder, so I guess that hatchling uses a newer metadata format than what twine supports.

As I see it, the only working workaround is to modify the header in PKG_INFO manually.

Interesting thing.
I upgraded twine up to 5.1.1, then I tried to upgrade pkginfo up to latest version (currently 1.11.1) and got an error twine 5.1.1 requires pkginfo<1.11, but you have pkginfo 1.11.1 which is incompatible., so I run this command and it worked:
python3.11 -m pip install --upgrade pkginfo==1.10

Make sure to use your specific python version if it's applicable to you.

[progeroffline]

After update package pkginfo the problem went away.

python3 -m pip install --upgrade pkginfo