fix #62 (toast now addressed relatively); macros=>procs + other fixes (#70)

* fixes https://github.com/genotrance/nimterop/issues/62
*  toast is now automatically built on demand, and doesn't depend on PATH
- [ ] todo: need to track its deps properly to trigger rebuilding it; using same algo as shown here https://github.com/genotrance/nimterop/issues/69 but using nim deps instead of c deps
* many other fixes
  * trying to follow https://github.com/timotheecour/vitanim/wiki/Nim-best-practices

tests/tnimterop_c.nim

@@ -67,9 +67,11 @@ s1.field1 = 5
 s2.field1 = 6
 s3.field1 = 7
 s4.field2[2] = 5
+
+# note: simplify with `defined(c)` for nim >= 0.19.9
 when defined(cpp):
-  discard # TODO
-else: # TODO: what's `defined(cpp)` for c ?
+  discard
+else:
   s4.field3[3] = enum1
 
 s5.tci = test_call_int
@@ -92,9 +94,9 @@ check test_call_int() == 5
 check test_call_param(5).field1 == 5
 check test_call_param2(5, s2).field1 == 11
 check test_call_param3(5, s1).field1 == 10
-# error: assigning to 'enum ENUM' from incompatible type 'NI' (aka 'long long')
 when defined(cpp):
-  discard # TODO
+  # error: assigning to 'enum ENUM' from incompatible type 'NI' (aka 'long long')
+  discard
 else:
   check test_call_param4(e) == e2
 check test_call_param5(5.0).field2 == 5.0
@@ -103,7 +105,6 @@ u.field1 = 4
 check test_call_param7(u) == 4
 
 when defined(cpp):
-  # TODO
    # note: candidate function not viable: no known conversion from 'NI *' (aka 'long long *') to 'int *' for 1st argument
   # check test_call_param8(cast[ptr int](addr i)) == 25.0
   discard

tests/tsoloud.nim

@@ -1,10 +1,12 @@
-import os, nimterop/[cimport, git]
+import os, nimterop/[cimport, git, paths]
 
 const
-  incl = "soloud/include"
-  src = "soloud/src"
+  baseDir = nimteropBuildDir()/"soloud"
+  incl = baseDir/"include"
+  src = baseDir/"src"
 
-gitPull("https://github.com/jarikomppa/soloud", "soloud", "include/*\nsrc/*\n")
+static:
+  gitPull("https://github.com/jarikomppa/soloud", baseDir, "include/*\nsrc/*\n")
 
 cDebug()
 cDisableCaching()
@@ -50,4 +52,4 @@ when declared(WavStream_stop):
   assert "WavStream_stop() not skipped"
 
 when declared(WavStream_setFilter):
-  assert "WavStream_setFilter not skipped"
+  assert "WavStream_setFilter not skipped"