the structure of directories is not clear

[yegor256]

It would be very helpful if you explain the entire tree of the directory in this file: https://github.com/objectionary/eo-phi-normalizer/blob/master/eo-phi-normalizer/README.md As it looks now, the are not conventions in Haskell world (or I don't know them), which would be obviously followed in this repo. It's hard to understand the meaning, for example, of test/Test directory (why "test" twice?).

[yegor256]

@deemp please, check

[deemp]

@yegor256, the package.yaml and eo-phi-normalizer.cabal pretty much describe which directories contain files for which parts of the Haskell project.

The structure of package.yaml is documented here.

The structure of a *.cabal file is documented here.

[yegor256]

@deemp looks good, but where can I find information about the test/Test directory?

[deemp]

@yegor256, as follows from package.yaml, the test directory contains test modules.

The modules from src and test may be imported in the test modules.

The modules must start with a capital letter (https://en.wikibooks.org/wiki/Haskell/Modules) and their names are mapped to paths to these modules.

We decided to group some modules under Test.

Here's how we import one of these modules:

eo-phi-normalizer/eo-phi-normalizer/test/Language/EO/PhiSpec.hs

Line 49 in 3174d7b

import Test.Metrics.Phi (MetricsTest (..), MetricsTestSet (..))

[yegor256]

@deemp maybe at least a quick intro you can add to the README? Now the project looks very "cold" to a stranger. Of course, a qualified Haskell developer will figure everything out, but others...