paket restore not working with nexus nuget proxy and normalized version number

Description

When I am trying to restore nuget package SourceLink.Fake with version 1.1.0 from a nexus nuget proxy server I get the following error message:

Paket version 4.8.5
Downloading SourceLink.Fake 1.1
Something went wrong while downloading SourceLink.Fake 1.1
Message: Could not download SourceLink.Fake 1.1.
    Couldn't get package details for package SourceLink.Fake 1.1 on http://localhost:8081/repository/nuget.org-proxy.
  ==> Trying again
Downloading SourceLink.Fake 1.1
Something went wrong while downloading SourceLink.Fake 1.1
Message: Could not download SourceLink.Fake 1.1.
    Couldn't get package details for package SourceLink.Fake 1.1 on http://localhost:8081/repository/nuget.org-proxy.
  ==> Last trial
Downloading SourceLink.Fake 1.1
Paket failed with:
        Could not download SourceLink.Fake 1.1.
    Couldn't get package details for package SourceLink.Fake 1.1 on http://localhost:8081/repository/nuget.org-proxy.

SourceLink.Fake is just an example. It will not work for any other package and version with trailing 0.

paket.dependencies

source http://localhost:8081/repository/nuget.org-proxy/
nuget SourceLink.Fake = 1.1.0

paket.lock

NUGET
  remote: http://localhost:8081/repository/nuget.org-proxy
    SourceLink.Fake (1.1)

#1777 might be related.

Repro steps

1. Install nexus nuget proxy server. Easiest way using docker: docker run -d -p 8081:8081 --name nexus sonatype/nexus3. https://hub.docker.com/r/sonatype/nexus3/
2. Setup minimal project with paket.exe and paket.dependencies as stated above.
3. Run .paket/paket.exe install
4. Delete package/ directory
5. Run .paket/paket.exe clear-cache
6. Run .paket/paket.exe restore

See test.zip. Steps 3 and 4 can be skipped when using project in zip file.

Expected behavior

The expected result is that paket restores the needed nuget paket to package/ folder

Actual behavior

An error occurs and the package is not restored.

I believe this is the important part of verbose output of .paket/paket.exe restore (full log: verbose.txt):

Downloading SourceLink.Fake 1.1
Response from http://localhost:8081/repository/nuget.org-proxy/Packages?$filter=(tolower(Id) eq 'sourcelink.fake') and (NormalizedVersion eq '1.1.0'):

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<feed xml:base="http://localhost:8081/repository/nuget.org-proxy/" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://www.w3.org/2005/Atom">
  <title type="text">Packages</title>
  <id>http://localhost:8081/repository/nuget.org-proxy/Packages</id>
  <updated>2017-05-08T12:37:06.654Z</updated>
  <link rel="self" title="Packages" href="Packages"/>
  <m:count>0</m:count>
</feed>
Response from http://localhost:8081/repository/nuget.org-proxy/Packages?$filter=(tolower(Id) eq 'sourcelink.fake') and (Version eq '1.1'):

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<feed xml:base="http://localhost:8081/repository/nuget.org-proxy/" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://www.w3.org/2005/Atom">
  <title type="text">Packages</title>
  <id>http://localhost:8081/repository/nuget.org-proxy/Packages</id>
  <updated>2017-05-08T12:37:06.890Z</updated>
  <link rel="self" title="Packages" href="Packages"/>
  <m:count>0</m:count>
</feed>
Error while retrieving 'http://localhost:8081/repository/nuget.org-proxy/Packages(Id='SourceLink.Fake',Version='1.1')': System.AggregateException: One or more errors occurred. ---> System.Net.WebException: The remote server returned an error: (404) Not Found.
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Net.WebClient.GetWebResponse(WebRequest request, IAsyncResult result)
   at System.Net.WebClient.DownloadBitsResponseCallback(IAsyncResult result)
   --- End of inner exception stack trace ---
---> (Inner Exception #0) System.Net.WebException: The remote server returned an error: (404) Not Found.
   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   at System.Net.WebClient.GetWebResponse(WebRequest request, IAsyncResult result)
   at System.Net.WebClient.DownloadBitsResponseCallback(IAsyncResult result)<---

I believe the second request should be requesting Version eq '1.1.0' because 1.1.0 is the non-normalized version of the nuget package.

Known workarounds

There are multiple ways to work around this issue:

1. Do not use nuget proxy but the official nuget.org server
2. Run .paket/paket.exe update
3. Delete paket.lock and run .paket/paket.exe install

[forki]

I just released paket 5.6.3 with a fix. But I assume it’s a bug in sonatype since NormalizedVersion is 1.1.0 and it can’t retrieve that. please also report it with sonatype directly.

[PMudra]

Thanks for the fix. I tried again and it is working now!

I found this issue on sonatypes jira: https://issues.sonatype.org/browse/NEXUS-6159 The missing NormalizedVersion is mentioned there.