Read version from nimble file

futhark.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "0.9.1" # Remember to update the version in futhark.nim as well
+version       = "0.9.1"
 author        = "PMunch"
 description   = "A package which uses libclang to parse C headers into Nim files for easy interop"
 license       = "MIT"
@@ -15,3 +15,4 @@ requires "nim >= 1.4.8"
 requires "https://github.com/PMunch/libclang-nim#head"
 requires "termstyle"
 requires "macroutils"
+requires "https://github.com/PMunch/nimbleutils >= 0.3.0"

src/futhark.nim

@@ -1,9 +1,9 @@
 import macros, strutils, os, json, tables, sets, sugar, hashes, std/compilesettings, sequtils
 import macroutils except Lit
+import pkg/nimbleutils
 
 const
   Stringable = {nnkStrLit..nnkTripleStrLit, nnkCommentStmt, nnkIdent, nnkSym}
-  VERSION = "0.9.1"
   builtins = ["addr", "and", "as", "asm",
     "bind", "block", "break",
     "case", "cast", "concept", "const", "continue", "converter",
@@ -32,6 +32,20 @@ const
   futharkRebuild = defined(futharkRebuild) or opirRebuild
   preAnsiFuncDecl = defined(preAnsiFuncDecl)
   echoForwards = defined(echoForwards)
+  VERSION = block:
+    # source style, go up one dir
+    var nimblePath = currentSourcePath().parentDir().parentDir() / "futhark.nimble"
+    if not fileExists(nimblePath):
+      # installed style, nimble file in same dir
+      nimblePath = currentSourcePath().parentDir() / "futhark.nimble"
+    if not fileExists(nimblePath):
+      # try find by name
+      nimblePath = "futhark"
+    try:
+      $getPackage(nimblePath).version
+    except CatchableError:
+      warning "Couldn't find futhark version from 'nimble dump " & nimblePath & "'"
+      "unknown"
 
 template strCmp(node, value: untyped): untyped = node.kind in Stringable and node.strVal == value