internal/pkg: create symlinks for files

These are much easier to handle than hard links and should be just as transparent for this use case.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/pkg/net_test.go

@@ -150,7 +150,7 @@ func TestHTTP(t *testing.T) {
 			} else if gotIdent := f.ID(); gotIdent != (pkg.Checksum{}) {
 				t.Fatalf("ID: %x, want %x", gotIdent, pkg.Checksum{})
 			}
-		}, pkg.MustDecode("bAJdeuI2cITlff5uIDbMKIiaW6zB-_XGinOMOMjNmltL3YAanXLiV64_jsXeQMXn")},
+		}, pkg.MustDecode("4WHaMvRRcCac1uAyXnEklEd2YaNQBj6rXlfMntX9GgYLij3By1znv5QYPGJHYQIH")},
 
 		{"store", nil, func(t *testing.T, base *check.Absolute, c *pkg.Cache) {
 			var (
@@ -184,6 +184,6 @@ func TestHTTP(t *testing.T) {
 			} else if checksum != testdataChecksum {
 				t.Fatalf("Hash: %x, want %x", checksum, testdataChecksum)
 			}
-		}, pkg.MustDecode("bAJdeuI2cITlff5uIDbMKIiaW6zB-_XGinOMOMjNmltL3YAanXLiV64_jsXeQMXn")},
+		}, pkg.MustDecode("4WHaMvRRcCac1uAyXnEklEd2YaNQBj6rXlfMntX9GgYLij3By1znv5QYPGJHYQIH")},
 	})
 }