Error: cannot open file: compiler/ast

[HJarausch]

Trying to install nimedit on my Gentoo Linux system fails like
nimble install https://github.com/Araq/nimedit.git
Downloading https://github.com/Araq/nimedit.git using git
Verifying dependencies for [email protected]
Info: Dependency on sdl2@#head already satisfied
Verifying dependencies for sdl2@#head
Info: Dependency on dialogs@>= 1.0 already satisfied
Verifying dependencies for [email protected]
Info: Dependency on gtk2@>= 1.0 already satisfied
Verifying dependencies for [email protected]
Info: Dependency on cairo@any version already satisfied
Verifying dependencies for [email protected]
Installing [email protected]
Building NimEdit/nimedit using c backend
/tmp/nimble_174096/githubcom_Araqnimeditgit/prims.nim(4, 8) Warning: imported and not used: 'random' [UnusedImport]
/tmp/nimble_174096/githubcom_Araqnimeditgit/styles.nim(6, 8) Warning: imported and not used: 'languages' [UnusedImport]
/tmp/nimble_174096/githubcom_Araqnimeditgit/buffertype.nim(2, 62) Error: cannot open file: compiler/ast
Tip: 9 messages have been suppressed, use --verbose to show them.
Error: Build failed for package: NimEdit
... Execution failed with exit code 1
... Command: /usr/bin/nim c --colors:on --noNimblePath -d:release -d:NimblePkgVersion=0.91 --path:'/home/jarausch/.nimble/pkgs/sdl2-#head' --path:/home/jarausch/.nimble/pkgs/dialogs-1.1.1 --path:/home/jarausch/.nimble/pkgs/gtk2-1.3 --path:/home/jarausch/.nimble/pkgs/cairo-1.1.1 --hints:off -o:/tmp/nimble_174096/githubcom_Araqnimeditgit/nimedit /tmp/nimble_174096/githubcom_Araqnimeditgit/nimedit.nim

What am I missing?
Thanks for hint,
Helmut