Regression: URLs strings can no longer be converted to File in WDL.

[adamnovak]

Similar to #5031, there's been a regression in WDL File handling for coercing URLs Strings to File. This is part of #5057; that workflow relies on reading a TSV of URLs and coercing the entries to Files. In Toil 7.0.0, that part of the workflow worked; in Toil 7d4d074 it does not. The URLs get nonexistent: prepended to them, because I guess they aren't local files.

Here's a minimal workflow to reproduce the problem, with no inputs.

version 1.0

workflow url_to_file {
    input {
    }

    File the_file = "https://hgdownload.soe.ucsc.edu/goldenPath/hs1/bigZips/hs1.chrom.sizes"

    output {
        File out_file = the_file
        String first_line = read_lines(the_file)[0]
    }
}

Note that MiniWDL also can't handle this, but I think Cromwell does what you would expect here.

┆Issue is synchronized with this Jira Story
┆Issue Number: TOIL-1630