Warning: The install command is a part of the legacy v1 style of cabal usage.

Please switch to using either the new project style and the new-install
command or the legacy v1-install alias as new-style projects will become the
default in the next version of cabal-install. Please file a bug if you cannot
replicate a working v1- use case with the new-style commands.

For more information, see: https://wiki.haskell.org/Cabal/NewBuild

Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: sr-extra-1.64 (user goal)
[__1] trying: userid-0.1.3.3 (dependency of sr-extra)
[__2] next goal: safecopy (dependency of sr-extra)
[__2] rejecting: safecopy-0.10.2, safecopy-0.10.1, safecopy-0.10.0 (conflict:
userid => safecopy>=0.8 && <0.10)
[__2] rejecting: safecopy-0.9.4.3, safecopy-0.9.4.2, safecopy-0.9.4.1,
safecopy-0.9.4, safecopy-0.9.3.3, safecopy-0.9.3.2, safecopy-0.9.3.1,
safecopy-0.9.3, safecopy-0.9.2, safecopy-0.9.1, safecopy-0.9.0.1,
safecopy-0.9.0, safecopy-0.8.6, safecopy-0.8.5, safecopy-0.8.4,
safecopy-0.8.3, safecopy-0.8.2, safecopy-0.8.1, safecopy-0.8.0,
safecopy-0.7.2, safecopy-0.7.1, safecopy-0.7.0, safecopy-0.6.3,
safecopy-0.6.2, safecopy-0.6.1, safecopy-0.6.0, safecopy-0.5.1, safecopy-0.5,
safecopy-0.4.3, safecopy-0.4.2, safecopy-0.4.1, safecopy-0.4, safecopy-0.3,
safecopy-0.2, safecopy-0.1 (conflict: sr-extra => safecopy>=0.9.5)
[__2] fail (backjumping, conflict set: safecopy, sr-extra, userid)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: base, sr-extra, safecopy, userid