shared lib

Setup.hs

@@ -0,0 +1,14 @@
+import Distribution.Simple
+
+main :: IO ()
+main = defaultMainWithHooks simpleUserHooks
+  {  postCopy = copyLib
+  }
+
+copyLib :: :: Args -> CopyFlags -> PackageDescription -> LocalBuildInfo -> IO ()
+copyExtLib _ flags pkg_descr lbi = do
+    let libPref = libdir . absoluteInstallDirs pkg_descr lbi
+                . fromFlag . copyDest
+                $ flags
+    let verbosity = fromFlag $ copyVerbosity flags
+    rawSystemExit verbosity "cp" ["libHSdear-imgui-2.0.0-inplace-ghc8.10.7.so", libPref]

dear-imgui.cabal

@@ -170,8 +170,16 @@ library
     imgui/imgui_draw.cpp
     imgui/imgui_tables.cpp
     imgui/imgui_widgets.cpp
+  install-includes:
+    imgui.h
+    imgui_internal.h
+    imstb_rectpack.h
+    imstb_textedit.h
+    imstb_truetype.h
   extra-libraries:
     stdc++
+  extra-bundled-libraries:
+    HSdear-imgui-2.0.0-inplace
   include-dirs:
     imgui
   build-depends: