scriptcs -install gives a very verbose error for package not found #1114
Description
In scriptcs version 0.14.1 installing a package that does not exist gives a nice compact error
gbmac:test glennblock$ scriptcs -install footest
Installing packages...
ERROR: Unable to find package 'footest'.
ERROR: Package installation failed: One or more errors occurred.
In 0.15.0 this error got very ugly.
ERROR: Error installing package. [InvalidOperationException] Unable to find package 'scriptcs.calculator'.
ERROR: Package installation failed: System.AggregateException: One or more errors occurred ---> System.InvalidOperationException: Unable to find package 'scriptcs.calculator'.
at NuGet.PackageRepositoryHelper.ResolvePackage (IPackageRepository sourceRepository, IPackageRepository localRepository, IPackageConstraintProvider constraintProvider, System.String packageId, NuGet.SemanticVersion version, Boolean allowPrereleaseVersions) [0x00000] in <filename unknown>:0
at NuGet.PackageRepositoryHelper.ResolvePackage (IPackageRepository sourceRepository, IPackageRepository localRepository, System.String packageId, NuGet.SemanticVersion version, Boolean allowPrereleaseVersions) [0x00000] in <filename unknown>:0
at NuGet.PackageManager.InstallPackage (System.String packageId, NuGet.SemanticVersion version, Boolean ignoreDependencies, Boolean allowPrereleaseVersions) [0x00000] in <filename unknown>:0
at ScriptCs.Hosting.Package.NugetInstallationProvider.InstallPackage (IPackageReference packageId, Boolean allowPreRelease) [0x00000] in <filename unknown>:0
at ScriptCs.Hosting.Package.PackageInstaller.InstallPackages (IEnumerable`1 packageIds, Boolean allowPreRelease) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at ScriptCs.Hosting.Package.PackageInstaller.InstallPackages (IEnumerable`1 packageIds, Boolean allowPreRelease) [0x00000] in <filename unknown>:0
at ScriptCs.Command.InstallCommand.Execute () [0x00000] in <filename unknown>:0
--> (Inner exception 0) System.InvalidOperationException: Unable to find package 'scriptcs.calculator'.
at NuGet.PackageRepositoryHelper.ResolvePackage (IPackageRepository sourceRepository, IPackageRepository localRepository, IPackageConstraintProvider constraintProvider, System.String packageId, NuGet.SemanticVersion version, Boolean allowPrereleaseVersions) [0x00000] in <filename unknown>:0
at NuGet.PackageRepositoryHelper.ResolvePackage (IPackageRepository sourceRepository, IPackageRepository localRepository, System.String packageId, NuGet.SemanticVersion version, Boolean allowPrereleaseVersions) [0x00000] in <filename unknown>:0
at NuGet.PackageManager.InstallPackage (System.String packageId, NuGet.SemanticVersion version, Boolean ignoreDependencies, Boolean allowPrereleaseVersions) [0x00000] in <filename unknown>:0
at ScriptCs.Hosting.Package.NugetInstallationProvider.InstallPackage (IPackageReference packageId, Boolean allowPreRelease) [0x00000] in <filename unknown>:0
at ScriptCs.Hosting.Package.PackageInstaller.InstallPackages (IEnumerable`1 packageIds, Boolean allowPreRelease) [0x00000] in <filename unknown>:0
We should trap this hideous error and put back a nice message