| definition: |
checkRequiredExecutables :: ErrorLogger ()
checkRequiredExecutables = do
logDebug "Checking whether all required executables can be found..."
missingExecutables <- liftIOEL $ checkExecutables listOfExecutables
unless (null missingExecutables) $ do
logError $ "The following programs could not be found on the PATH " ++
"(they are required for CPM to work):\n" ++
intercalate ", " missingExecutables
liftIOEL $ exitWith 1
logDebug "All required executables found."
where
listOfExecutables =
[ "curl"
, "git"
, "unzip"
, "tar"
, "cp"
, "rm"
, "ln"
, "readlink"
, "realpath" ]
|
| demand: |
no demanded arguments |
| deterministic: |
deterministic operation |
| documentation: |
------------------------------------------------------------------------------ --- Check whether all operating system executables required by CPM are present --- on the current system. --- Since this takes some time, it is only checked with CPM's `update` command. |
| failfree: |
<FAILING> |
| indeterministic: |
referentially transparent operation |
| infix: |
no fixity defined |
| iotype: |
{() |-> _}
|
| name: |
checkRequiredExecutables |
| precedence: |
no precedence defined |
| result-values: |
_ |
| signature: |
CPM.ErrorLogger.ErrorLogger () |
| solution-complete: |
operation might suspend on free variables |
| terminating: |
possibly non-terminating |
| totally-defined: |
possibly non-reducible on same data term |