HTk

System: Slackware Linux (version 14.2)
CPUs: Intel(R) Atom(TM) CPU N270 @1.60GHz

See a previous Post on the Haskell setup.

When I get around to it I'll see about compatibility of Slackware-14.2's tcl version number with HTk.

bash-4.3$ cabal install uni-htk-2.2.1.3          
Resolving dependencies...
Downloading uni-util-2.3.0.2...
Configuring uni-util-2.3.0.2...
Building uni-util-2.3.0.2...
Installed uni-util-2.3.0.2
Downloading uni-events-2.2.2.0...
Configuring uni-events-2.2.2.0...
Building uni-events-2.2.2.0...
Installed uni-events-2.2.2.0
Downloading uni-reactor-2.2.1.0...
Downloading uni-posixutil-2.2.1.1...
Configuring uni-posixutil-2.2.1.1...
Configuring uni-reactor-2.2.1.0...
Building uni-reactor-2.2.1.0...
Building uni-posixutil-2.2.1.1...
Installed uni-reactor-2.2.1.0
Installed uni-posixutil-2.2.1.1
Downloading uni-htk-2.2.1.3...
Configuring uni-htk-2.2.1.3...
Building uni-htk-2.2.1.3...
Installed uni-htk-2.2.1.3
bash-4.3$ exit