feat(compare-command): Allow to ignore environment differences

Signed-off-by: Sebastian Schuberth <[email protected]>

plugins/commands/compare/src/main/kotlin/CompareCommand.kt

@@ -63,6 +63,11 @@ class CompareCommand : OrtCommand(
         help = "Ignore time differences."
     ).flag()
 
+    private val ignoreEnvironment by option(
+        "--ignore-environment", "-e",
+        help = "Ignore environment differences."
+    ).flag()
+
     override fun run() {
         if (fileA == fileB) {
             println("The arguments point to the same file.")
@@ -75,6 +80,10 @@ class CompareCommand : OrtCommand(
                     if (ignoreTime) {
                         put("""^(\s+(?:start|end)_time:) "[^"]+"$""", "$1 \"${Instant.EPOCH}\"")
                     }
+
+                    if (ignoreEnvironment) {
+                        put("""^(\s{2}environment:)$\n(?:^\s{4,}.+\n?)+$""", "$1\n    ort_version: \"deadbeef\"")
+                    }
                 }
 
                 val diff = unifiedDiff(fileA, fileB, replacements)