diff --git a/Makefile b/Makefile
index 04990ef..1fde9ad 100644
--- a/Makefile
+++ b/Makefile
@@ -5,3 +5,10 @@ test_reports:
 	dotnet test --collect "XPlat Code Coverage" --results-directory /tmp/pentole_reports/
 	mv /tmp/pentole_reports/*/coverage.cobertura.xml .
 	reportgenerator  -targetdir:coverlet/reports -reporttypes:HtmlInline_AzurePipelines -reports:coverage.cobertura.xml
+
+
+clean:
+	rm Pentole/bin Pentole/obj tests/bin tests/obj -fr
+
+docs: test
+	fsdocs build --output pentole
diff --git a/Pentole/Pentole.fsproj b/Pentole/Pentole.fsproj
index a16b241..c4ba52d 100644
--- a/Pentole/Pentole.fsproj
+++ b/Pentole/Pentole.fsproj
@@ -4,12 +4,13 @@
     <TargetFramework>net8.0</TargetFramework>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <PackageId>Pentole</PackageId>
-    <Version>0.0.1</Version>
+    <Version>0.0.3</Version>
     <Authors>Francesco Mecca</Authors>
     <Company>Bugless24</Company>
   </PropertyGroup>
 
   <ItemGroup>
+    <Compile Include="logginghelpers.fs" />
     <Compile Include="binaryprefix.fs" />
     <Compile Include="pervasives.fs" />
     <Compile Include="string.fs" />
@@ -22,6 +23,9 @@
 
   <ItemGroup>
     <PackageReference Include="Nunit" Version="4.2.1" />
+    <PackageReference Include="Serilog" Version="4.2.0" />
+    <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
+    <PackageReference Include="Serilog.Sinks.File" Version="6.0.0" />
   </ItemGroup>
 
 </Project>
diff --git a/Pentole/native.fs b/Pentole/native.fs
index 023cd89..570e700 100644
--- a/Pentole/native.fs
+++ b/Pentole/native.fs
@@ -16,7 +16,7 @@ let realpath (path: string) =
     if ptr = IntPtr.Zero then
         let errno = Marshal.GetLastWin32Error()
         let error = Marshal.PtrToStringAuto(_strerror errno)
-        Error $"realpath failed: {error} ({errno})"
+        Error $"realpath failed: {error} ({errno}), path={path}"
     else
         let result = Marshal.PtrToStringAuto ptr
         Marshal.FreeHGlobal ptr
diff --git a/Pentole/path.fs b/Pentole/path.fs
index c09feb8..030baa9 100644
--- a/Pentole/path.fs
+++ b/Pentole/path.fs
@@ -110,9 +110,9 @@ let is_normalized (path_: Path) =
 
 // impure functions
 // https://docs.python.org/3.8/library/pathlib.html
-
-let resolve = function
-    | Absolute path -> 
-        Native.realpath path |> Result.map Path.of_string
-    | Relative path -> 
-        Native.realpath path |> Result.map Path.of_string
+module FileSystem =
+    let resolve = function
+        | Absolute path -> 
+            Native.realpath path |> Result.bind Path.of_string
+        | Relative path -> 
+            Native.realpath path |> Result.bind Path.of_string
diff --git a/Pentole/pervasives.fs b/Pentole/pervasives.fs
index 30e0128..4c74acd 100644
--- a/Pentole/pervasives.fs
+++ b/Pentole/pervasives.fs
@@ -3,14 +3,12 @@ module Pentole.Pervasives
 /// <summary>
 /// The identity function.
 /// </summary>
-/// <param name="x"></param>
 let identity = id
 
 /// <summary>
 /// Pass the object to a function and return the object unchanged.
 /// Useful in the middle of pipelines to see what values are being passed or log
 /// </summary>
-/// <xparam name="x"></param>
 let tee fun_ obj =
     fun_ obj
     obj
diff --git a/tests/path_tests.fs b/tests/path_tests.fs
index 0c2d22f..753e15c 100644
--- a/tests/path_tests.fs
+++ b/tests/path_tests.fs
@@ -41,7 +41,7 @@ let resolve_test () =
     let test (s:string) =
         s
         |> Path.of_string
-        |> Result.bind resolve
+        |> Result.map FileSystem.resolve
         |> Result.get
     let p (n: string ) = Path.of_string n |> Result.get