Cannot install latest Figuro

[sonicsmooth]

Following instructions on main page.
nimble install https://github.com/elcritch/figuro --deps

or

git clone https://github.com/elcritch/figuro.git
cd figuro
nimble install --deps

...on both Windows and WSL, I get the following:

Info: Package cache path /home/sonic/.nimble/pkgcache
Info:  Nimble data file "/home/sonic/.nimble/nimbledata2.json" has been loaded.
packageparser.nim(326)   readPackageInfo

Error:  Could not read package info file in /mnt/c/Users/MyUserName/source/hubrepos/figuro/figuro.nimble;
    ...   Reading as ini file failed with:
    ...     Invalid section: .
    ...   Evaluating as NimScript file failed with:
    ...     /mnt/c/Users/MyUserName/source/hubrepos/figuro/figuro.nimble(36, 1) Error: undeclared identifier: 'feature'
    ... candidates (edit distance, scope distance); see '--spellSuggest':
    ...  (4, 1): 'figuro'
    ...  (4, 2): 'Letters'
    ...  (4, 2): 'Natural'
    ... printPkgInfo() failed.
 Info:  Nimble data file "/home/sonic/.nimble/nimbledata2.json" has been saved.

From what I've seen, this error doesn't necessarily originate from the local .nimble file.
How can I install Figuro? Very excited to try it out.
thanks.