Cannot install older version of hsdev (0.3.0.0)

[PabloMK7]

SublimeHaskell needs version 0.3.0.0 of hsdev in order to work, however when using cabal to install the desired version I run into errors that prevent me from continuing. If I try: cabal install hsdev-0.3.0.0 I get the following: Resolving dependencies... cabal: Could not resolve dependencies: [__0] next goal: hsdev (user goal) [__0] rejecting: hsdev-0.3.2.1, hsdev-0.3.2.0, hsdev-0.3.1.4, hsdev-0.3.1.3, hsdev-0.3.1.2, hsdev-0.3.1.1, hsdev-0.3.1.0, hsdev-0.3.0.3, hsdev-0.3.0.2, hsdev-0.3.0.1 (constraint from user target requires ==0.3.0.0) [__0] trying: hsdev-0.3.0.0 [__1] next goal: base (dependency of hsdev) [__1] rejecting: base-4.11.1.0/installed-4.1... (conflict: hsdev => base>=4.7 && <4.11) [__1] rejecting: base-4.12.0.0, base-4.11.1.0, base-4.11.0.0, base-4.10.1.0, base-4.10.0.0, base-4.9.1.0, base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from non-upgradeable package requires installed instance) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: hsdev, base

From what I can understand, it's not being able to get the proper base package version, so I tried the following: cabal install base-4.10.1.0 and I get: Resolving dependencies... cabal: Could not resolve dependencies: [__0] next goal: base (user goal) [__0] rejecting: base-4.12.0.0, base-4.11.1.0/installed-4.1..., base-4.11.1.0, base-4.11.0.0 (constraint from user target requires ==4.10.1.0) [__0] rejecting: base-4.10.1.0 (only already installed instances can be used) [__0] rejecting: base-4.10.0.0, base-4.9.1.0, base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0, base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0, base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0, base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0, base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from user target requires ==4.10.1.0) After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: base

I've searched online and only a single page reported a similar problem, but the answer required to use linux apt-get and that's not a possibility for me as I'm using Windows x64.

Ask me if you need more info, such as haskell platform and cabal version, etc

[mvoidex]

Are you building with ghc-8.4.*? Unfortunately, hsdev-0.3.0.0 can't be built with this version of ghc. You can either:

• use ghc-8.2.* and earlier versions, or
• install hsdev-0.3.2.1. If you're going to use it with SublimeHaskell, you should also use branched version of SublimeHaskell for hsdev-0.3.2.*