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The first encounter with the cwl for executing something needs to be as simple as ... donno ... something really simple. The traditional "Hello world!" for instance does not need any input. It is a mere generator. When executing the cwltool, I was asked if I wanted to to run #echocmd or #main. So, if #main is obsolete, which is good, then I strongly suggest not to have it with hello. With a bit of an imagination the CommandLineTool is a special kind of workflow, i.e. one that cannot nest or interconnect other workflows but wraps a tool. Then it is just fine to execute it direcly. The input line should not be required for a command line. A missing such should just be interpreted as 'no inputs'. I also removed the "stdout" line to make it more interactive, i.e. just like the original.
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A consequence of observations on the simplified hello.cwl and common-workflow-library/legacy#60 .
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Hello @smoe , thank you for this PR. I agree that one's first introduction should be simple. Have you seen @tetron 's new user guide? http://www.commonwl.org/draft-3/UserGuide.html We could probably delete the 'hello' workflow given this new resource. What do you think? |
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The first encounter with the cwl for executing something needs to be as simple as ... donno ... something really simple. The traditional "Hello world!" for instance does not need any input. It is a mere generator.
When executing the cwltool, I was asked if I wanted to to run #echocmd or #main. So, if #main is obsolete, which is good, then I strongly suggest not to have it with hello. With a bit of an imagination the CommandLineTool is a special kind of workflow, i.e. one that cannot nest or interconnect other workflows but wraps a tool. Then it is just fine to execute it direcly.
The input line should not be required for a command line. A missing such should just be interpreted as 'no inputs'.
I also removed the "stdout" line to make it more interactive, i.e. just like the original.