Sample build.fsx for a vim project - compile, and if it compiles then run the exe and capture the output back into vim.

build.fsx

open System.Diagnostics

let code =
  [
    "src/Board.fs"
    "src/WordSearch.fs"
  ]

let refs = []

let output = "output/WordSearch.exe"

let build referenceList codefileList output =
  let references =
    referenceList
    |> Seq.map (fun r -> sprintf "-r:%s" r)
    |> String.concat " "
  let codefiles =
    codefileList
    |> String.concat " "
  let outputfile = sprintf "--out:%s" output
  let args =
    [ "--nologo"
      "--consolecolors"
      "--debug"
      "--optimize"
      "--tailcalls"
      references
      codefiles
      outputfile ] |> String.concat " "
  let proc = Process.Start("fsharpc", args) 
  proc.WaitForExit()
  proc.ExitCode

let run () =
  let proc = Process.Start("mono", output)
  proc.WaitForExit()
  proc.ExitCode

match build refs code output with
| 0 -> 
  printfn "\n\n~~~~~ Compile complete, running output ~~~~~"
  run ()
| result -> result