Cannot unpack browser-downloaded .conda files

[mfansler]

Checklist

• I added a descriptive title
• I searched open reports and couldn't find a duplicate

What happened?

Downloading packages on Anaconda Cloud via a web browser (Safari 16.6.1) leads to a file like (for example, from https://anaconda.org/conda-forge/r-tinytex/files):

noarch_r-tinytex-0.49-r43hc72bb7e_0.conda

This fails to unpack with cph

(cph) $ cph x noarch_r-tinytex-0.49-r43hc72bb7e_0.conda 
Traceback (most recent call last):
  File "/Users/mfansler/.local/envs/cph/bin/cph", line 10, in <module>
    sys.exit(main())
             ^^^^^^
  File "/Users/mfansler/.local/envs/cph/lib/python3.12/site-packages/conda_package_handling/cli.py", line 121, in main
    api.extract(args.archive_path, args.dest, prefix=args.prefix)
  File "/Users/mfansler/.local/envs/cph/lib/python3.12/site-packages/conda_package_handling/api.py", line 77, in extract
    format.extract(fn, dest_dir, components=components)
  File "/Users/mfansler/.local/envs/cph/lib/python3.12/site-packages/conda_package_handling/conda_fmt.py", line 46, in extract
    _extract(str(fn), str(dest_dir), components=components)
  File "/Users/mfansler/.local/envs/cph/lib/python3.12/site-packages/conda_package_handling/streaming.py", line 35, in _extract
    stream = package_streaming.stream_conda_component(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/mfansler/.local/envs/cph/lib/python3.12/site-packages/conda_package_streaming/package_streaming.py", line 133, in stream_conda_component
    raise LookupError(f"didn't find {component_name} component in {filename}")
LookupError: didn't find info-noarch_r-tinytex-0.49-r43hc72bb7e_0 component in /Users/mfansler/Downloads/noarch_r-tinytex-0.49-r43hc72bb7e_0.conda

However, everything goes smoothly when downloading the file programmatically using the link on the Anaconda Cloud page:

(cph) $ wget https://anaconda.org/conda-forge/r-tinytex/0.49/download/noarch/r-tinytex-0.49-r43hc72bb7e_0.conda
(cph) $ cph x r-tinytex-0.49-r43hc72bb7e_0.conda

This behavior arose in the last few months. Is Anaconda Cloud doing something different when downloading from a web browser?

Conda Info

active environment : /Users/mfansler/.local/envs/cph
    active env location : /Users/mfansler/.local/envs/cph
            shell level : 2
       user config file : /Users/mfansler/.condarc
 populated config files : /Users/mfansler/.condarc
          conda version : 23.7.4
    conda-build version : 3.28.2
         python version : 3.9.15.final.0
       virtual packages : __archspec=1=skylake
                          __osx=11.7.10=0
                          __unix=0=0
       base environment : /Users/mfansler/miniconda3  (writable)
      conda av data dir : /Users/mfansler/miniconda3/etc/conda
  conda av metadata url : None
           channel URLs : https://conda.anaconda.org/conda-forge/osx-64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://conda.anaconda.org/bioconda/osx-64
                          https://conda.anaconda.org/bioconda/noarch
                          https://repo.anaconda.com/pkgs/main/osx-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/osx-64
                          https://repo.anaconda.com/pkgs/r/noarch
          package cache : /Users/mfansler/miniconda3/pkgs
                          /Users/mfansler/.conda/pkgs
       envs directories : /Users/mfansler/miniconda3/envs
                          /Users/mfansler/.conda/envs
               platform : osx-64
             user-agent : conda/23.7.4 requests/2.28.1 CPython/3.9.15 Darwin/20.6.0 OSX/11.7.10
                UID:GID : 501:20
             netrc file : None
           offline mode : False

Conda Config

==> /Users/mfansler/.condarc <==
auto_activate_base: True
changeps1: True
env_prompt: ({default_env}) 
create_default_packages: []
envs_dirs:
  - /Users/mfansler/miniconda3/envs
ssl_verify: True
channel_priority: flexible
channels:
  - conda-forge
  - bioconda
  - defaults
show_channel_urls: False
restore_free_channel: False
offline: False

==> cmd_line <==
debug: False
json: False

Conda list

# packages in environment at /Users/mfansler/.local/envs/cph:
#
# Name                    Version                   Build  Channel
bzip2                     1.0.8                h10d778d_5    conda-forge
ca-certificates           2023.11.17           h8857fd0_0    conda-forge
cffi                      1.16.0          py312h38bf5a0_0    conda-forge
conda-package-handling    2.2.0              pyh38be061_0    conda-forge
conda-package-streaming   0.9.0              pyhd8ed1ab_0    conda-forge
libexpat                  2.5.0                hf0c8a7f_1    conda-forge
libffi                    3.4.2                h0d85af4_5    conda-forge
libsqlite                 3.44.2               h92b6c6a_0    conda-forge
libzlib                   1.2.13               h8a1eda9_5    conda-forge
ncurses                   6.4                  h93d8f39_2    conda-forge
openssl                   3.2.0                hd75f5a5_1    conda-forge
pip                       23.3.2             pyhd8ed1ab_0    conda-forge
pycparser                 2.21               pyhd8ed1ab_0    conda-forge
python                    3.12.1          h9f0c242_1_cpython    conda-forge
python_abi                3.12                    4_cp312    conda-forge
readline                  8.2                  h9e318b2_1    conda-forge
setuptools                69.0.3             pyhd8ed1ab_0    conda-forge
tk                        8.6.13               h1abcd95_1    conda-forge
tzdata                    2023d                h0c530f3_0    conda-forge
wheel                     0.42.0             pyhd8ed1ab_0    conda-forge
xz                        5.2.6                h775f41a_0    conda-forge
zstandard                 0.22.0          py312h7a629f7_0    conda-forge
zstd                      1.5.5                h829000d_0    conda-forge

Additional Context

Recommended to transfer report here from conda-forge/conda-forge.github.io#2055.

[jezdez]

@dholth Can you look into this please?

[dholth]

anaconda.org includes the directory in the filename= content-disposition and that winds up in the downloaded filename. Instead, it should say

Current behavior filename="noarch/r-tinytex-0.49-r43hc72bb7e_1.conda"; filename*=UTF-8''noarch%2Fr-tinytex-0.49-r43hc72bb7e_1.conda

Desired behavior filename="r-tinytex-0.49-r43hc72bb7e_1.conda"; filename*=UTF-8''r-tinytex-0.49-r43hc72bb7e_1.conda

(what's up with the UTF-8 portion?)

% curl -I https://anaconda.org/conda-forge/r-tinytex/0.49/download/noarch/r-tinytex-0.49-r43hc72bb7e_1.conda
HTTP/2 200
date: Tue, 09 Jan 2024 20:22:30 GMT
content-type: application/octet-stream
content-length: 146795
content-disposition: attachment; filename="noarch/r-tinytex-0.49-r43hc72bb7e_1.conda"; filename*=UTF-8''noarch%2Fr-tinytex-0.49-r43hc72bb7e_1.conda

You may rename the local file without the noarch_ prefix to extract.

[simonnier]

This also happens when we conda install offline .conda file downloaded from anaconda. This is solved by renaming .conda file as shown in this stackoverflow post https://stackoverflow.com/questions/77928132/how-to-install-conda-file-downloaded-from-anaconda-package-site