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    <p>F# has never worked for me under Linux. Today with Mono 2.8 and the November 2010 drop of F# (which confusingly has the exact same version number as the previous release?!) I get:</p> <pre><code>$ sudo ./install-mono.sh In order to add FSharp.Core.dll to the Mono GAC the DLL needs to be re-signed with the mono.snk key. The mono.snk key is available from the 'Mono Sources'. http://www.mono-project.com/ http://github.com/mono/mono/raw/master/mcs/class/mono.snk For example, run: wget -O mono.snk http://github.com/mono/mono/raw/master/mcs/class/mono.snk Then re-run this script. An alternative to installing the DLLs in the Mono GAC is to add the FSharp bin directory to the MONO_PATH variable. For more information on 'How Mono Finds Assemblies' see http://www.mono-project.com/Gacutil </code></pre> <p>If I run the <code>wget</code> command that it suggests then it dies:</p> <pre><code>$ wget -O mono.snk http://github.com/mono/mono/raw/master/mcs/class/mono.snk --2010-11-23 17:02:43-- http://github.com/mono/mono/raw/master/mcs/class/mono.snk Resolving github.com... 207.97.227.239 Connecting to github.com|207.97.227.239|:80... connected. HTTP request sent, awaiting response... 301 Moved Permanently Location: https://github.com/mono/mono/raw/master/mcs/class/mono.snk [following] --2010-11-23 17:02:44-- https://github.com/mono/mono/raw/master/mcs/class/mono.snk Connecting to github.com|207.97.227.239|:443... connected. ERROR: certificate common name `*.github.com' doesn't match requested host name `github.com'. To connect to github.com insecurely, use `--no-check-certificate'. Unable to establish SSL connection. </code></pre> <p>Now if I rerun the F# installer I get a different error:</p> <pre><code>$ sudo ./install-mono.sh -- Resigning FSharp.Core.dll with mono.snk ERROR: Invalid number of parameters. Usage: sn [-q | -quiet] options [parameters] -q | -quiet Quiet mode (minimal display) Help options -? | -h Show this help screen about the tool -? | -h config Configuration options -? | -h csp Crypto Service Provider (CSP) related options -? | -h convert Format convertion options -? | -h sn StrongName signing options -- Installing FSharp DLLS into the GAC Failure adding assembly bin/FSharp.Core.dll to the cache: Strong name cannot be verified for delay-signed assembly </code></pre> <p>If I copy the <code>mono.snk</code> file from the Mono 2.8 directory into the F# directory by hand then the installer seems to work:</p> <pre><code>$ sudo ./install-mono.sh -- Resigning FSharp.Core.dll with mono.snk Assembly bin/FSharp.Core.dll signed. -- Installing FSharp DLLS into the GAC Installed bin/FSharp.Core.dll into the gac (/usr/local/lib/mono/gac) </code></pre> <p>But F# itself still fails to work in exactly the same way that it did before (appearing to hang whenever input is entered):</p> <pre><code>$ mono bin/fsi.exe Microsoft (R) F# 2.0 Interactive build 2.0.0.0 Copyright (c) Microsoft Corporation. All Rights Reserved. For help type #help;; &gt; 1+2*3;; </code></pre> <p>I have to use CTRL+Z to regain control and then <code>kill %1</code> to kill the rogue process.</p>
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    1. USJon Harrop
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      1. VTUpMod
    1. COHi, Jon, I went through the same steps as you. Now the error message is gone while the fsi still stuck. I guess that it must be missing some other libraries.
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