problematic updates or downloads from dbCAN

[AdamVS]

Hi Jon,

There is a reoccurring error with downloading dbCAN databases from http://dbcan-hcc.unl.edu/download. This is somewhat similar to an earlier issue https://github.com/nextgenusfs/funannotate2/issues/39. During funannotate2 install -d all download.json (called line 114 from install.py) tries to fetch ...

    "dbCAN": "http://dbcan-hcc.unl.edu/download/dbCAN-HMMdb-V14.txt",
    "dbCAN-tsv": "http://dbcan-hcc.unl.edu/download/Databases/V12/CAZyDB.08062022.fam-activities.txt",
    "dbCAN-log": "http://dbcan-hcc.unl.edu/download/Databases/V11/readme.txt",

... but this fails from no response by dbCAN, although I can access dbCAN2/3 pages

Perhaps there can be alternative options to fetching the download links using the download.json from the funannotate2 github repo, or that there can be a flag for when the files are already locally sourced?

cheers and thanks for the help,

Adam

funannotate2 v26.2.12
Python 3.12.13

Ubuntu 25.10

[AdamVS]

For the moment the work around (as per issue #39) - is to provide alternate links in the local download.json and force install.py to use the local download.json (line 118 in install.py)

[nextgenusfs]

The problem when i looked a few weeks ago, was that they aren't being very consistent with updating files into a something like a "latest", ie I'm hacking together a few older release files to satisfy parsing of versions, etc. It is hacky, I'm open to a permanent fix -- but ultimately I think its to engage the dbCAN developers and ask for a more consistent hosting solution.

[ethan-mcq]

@nextgenusfs I am unsure if this is the stable link, but for the past couple months I have been using this host to download the dbCAN dbs.

[nextgenusfs]

Okay, please try again now. By default, f2 should check the GitHub version of downloads.json and use that if different from local. Please let me know if this fixes it.