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System.UnauthorizedAccessException: Access to the path "/home/larsw/.cache/dconf" is denied.
  at System.IO.Directory+<EnumerateKind>c__Iterator0.MoveNext () [0x00000] in <filename unknown>:0 
  at FSI_0001.Kodekamp+getFiles@22.GenerateNext (IEnumerable`1& next) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase`1[System.String].MoveNextImpl () [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase`1[System.String].System-Collections-IEnumerator-MoveNext () [0x00000] in <filename unknown>:0 
  at FSI_0001.Kodekamp+getFiles@22.GenerateNext (IEnumerable`1& next) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase`1[System.String].MoveNextImpl () [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase`1[System.String].System-Collections-IEnumerator-MoveNext () [0x00000] in <filename unknown>:0 
  at FSI_0001.Kodekamp+getFiles@22.GenerateNext (IEnumerable`1& next) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase`1[System.String].MoveNextImpl () [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Core.CompilerServices.GeneratedSequenceBase`1[System.String].System-Collections-IEnumerator-MoveNext () [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.IEnumerator+map@107[System.IO.FileInfo,System.String].DoMoveNext (System.IO.FileInfo& ) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.IEnumerator+MapEnumerator`1[System.IO.FileInfo].System-Collections-IEnumerator-MoveNext () [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.IEnumerator.next@176[FileInfo] (Microsoft.FSharp.Core.FSharpFunc`2 f, IEnumerator`1 e, Microsoft.FSharp.Core.FSharpRef`1 started, Microsoft.FSharp.Core.Unit unitVar0) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.IEnumerator+filter@171[System.IO.FileInfo].System-Collections-IEnumerator-MoveNext () [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.IEnumerator+map@107[System.Tuple`2[System.String,System.String],System.IO.FileInfo].DoMoveNext (System.Tuple`2& ) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.IEnumerator+MapEnumerator`1[System.Tuple`2[System.String,System.String]].System-Collections-IEnumerator-MoveNext () [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.SeqModule.Iterate[Tuple`2] (Microsoft.FSharp.Core.FSharpFunc`2 action, IEnumerable`1 source) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.SeqModule+GroupBy@1274[System.Tuple`2[System.String,System.String],System.String].Invoke (Microsoft.FSharp.Core.Unit unitVar0) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.SeqModule+mkDelayedSeq@833[System.Tuple`2[System.String,System.Collections.Generic.IEnumerable`1[System.Tuple`2[System.String,System.String]]]].Invoke (Microsoft.FSharp.Core.Unit unitVar0) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Core.CompilerServices.RuntimeHelpers+mkSeq@541[System.Tuple`2[System.String,System.Collections.Generic.IEnumerable`1[System.Tuple`2[System.String,System.String]]]].System-Collections-Generic-IEnumerable`1-GetEnumerator () [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.SeqModule+revamp@905[System.Tuple`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]],System.Tuple`2[System.String,System.Collections.Generic.IEnumerable`1[System.Tuple`2[System.String,System.String]]]].Invoke (Microsoft.FSharp.Core.Unit unitVar0) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Core.CompilerServices.RuntimeHelpers+mkSeq@541[System.Tuple`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]]].System-Collections-Generic-IEnumerable`1-GetEnumerator () [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.MapTreeModule.ofSeq[String,IEnumerable`1] (IComparer`1 comparer, IEnumerable`1 c) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.FSharpMap`2[System.String,System.Collections.Generic.IEnumerable`1[System.String]].Create (IEnumerable`1 ie) [0x00000] in <filename unknown>:0 
  at Microsoft.FSharp.Collections.MapModule.OfSeq[String,IEnumerable`1] (IEnumerable`1 elements) [0x00000] in <filename unknown>:0 
  at FSI_0001.Kodekamp.realMain[Object] (System.String[] argv) [0x00000] in <filename unknown>:0 
  at <StartupCode$FSI_0001>.$FSI_0001_Kodekamp.main@ () [0x00000] in <filename unknown>:0 
  at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
  at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0 
Stopped due to error