Any recommendations for viewing source files inside a .tgz file?

Question

Haskell's cabal package manager stores recent package source code in ~/Library/Haskell/repo-cache/*/*.tgz I've found that one often wishes to refer to Haskell module source code as documentation.

I'm happy simply using zless for small mostly text packages, but I could easily imagine improving upon this workflow.

I could install go to use zipfs from go-fuse to mount frequently referenced .tgz file directly, which might be useful. Anyone seen a fuse utility that mounts multiple .tgz files on one mount point?

I could alternatively write a tarless utility that treated a .tgz file like a directory by unpacking it in /tmp and displaying the file that appears after the *.tgz/. I'd then build the bash tab completion to navigate .tgz files from the command line.

Does anyone have recommendations in this or similar directions?