<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:times new roman,serif;font-size:large"><a href="https://www.haskell.org/ghc/blog/20190825-ghc-8.8.1-released.html">https://www.haskell.org/ghc/blog/20190825-ghc-8.8.1-released.html</a> says</div><div class="gmail_default" style="font-family:times new roman,serif;font-size:large"><br></div></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><code style="box-sizing:border-box;font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:14px;color:rgb(232,62,140);word-break:break-word">cabal-install</code><span style="color:rgb(33,37,41);font-family:sans-serif;font-size:16px"> users should note that </span><code style="box-sizing:border-box;font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:14px;color:rgb(232,62,140);word-break:break-word">cabal-install-3.0</code><span style="color:rgb(33,37,41);font-family:sans-serif;font-size:16px"> or later is required for use with GHC 8.8.<br><br></span></blockquote><div class="gmail_default" style="font-family:"times new roman",serif;font-size:large">but this seems wrong or have I done something wrong?</div><div class="gmail_default" style="font-family:"times new roman",serif;font-size:large"><br></div>$ cabal install cabal-install<br>cabal install cabal-install<br><span class="gmail_default" style="font-family:"times new roman",serif;font-size:large">...</span><br><br>Resolving dependencies...<br>cabal: Could not resolve dependencies:<br>[__0] trying: cabal-install-3.0.0.0 (user goal)<br>[__1] next goal: time (dependency of cabal-install)<br>[__1] rejecting: time-1.9.3/installed-1.9... (conflict: cabal-install =><br>base>=4.8 && <4.13, time => base==<a href="http://4.13.0.0/installed-4.1..">4.13.0.0/installed-4.1..</a>.)<br>[__1] trying: time-1.9.3<br>[__2] next goal: stm (dependency of cabal-install)<br>[__2] rejecting: stm-2.5.0.0/installed-2.5... (conflict: cabal-install =><br>base>=4.8 && <4.13, stm => base==<a href="http://4.13.0.0/installed-4.1..">4.13.0.0/installed-4.1..</a>.)<br>[__2] trying: stm-2.5.0.0<br>[__3] next goal: process (dependency of cabal-install)<br>[__3] rejecting: process-1.6.5.1/installed-1.6... (conflict: cabal-install =><br>base>=4.8 && <4.13, process => base==<a href="http://4.13.0.0/installed-4.1..">4.13.0.0/installed-4.1..</a>.)<br>[__3] trying: process-1.6.5.1<br>[__4] next goal: pretty (dependency of cabal-install)<br>[__4] rejecting: pretty-1.1.3.6/installed-1.1... (conflict: cabal-install =><br>base>=4.8 && <4.13, pretty => base==<a href="http://4.13.0.0/installed-4.1..">4.13.0.0/installed-4.1..</a>.)<br>[__4] trying: pretty-1.1.3.6<br>[__5] next goal: network (dependency of cabal-install)<br>[__5] rejecting: network-3.1.0.1/installed-CeX... (conflict: cabal-install =><br>base>=4.8 && <4.13, network => base==<a href="http://4.13.0.0/installed-4.1..">4.13.0.0/installed-4.1..</a>.)<br>[__5] trying: network-3.1.0.1<br>[__6] trying: hackage-security-0.5.3.0 (dependency of cabal-install)<br>[__7] next goal: template-haskell (dependency of hackage-security)<br>[__7] rejecting: template-haskell-2.15.0.0/installed-2.1... (conflict:<br>cabal-install => base>=4.8 && <4.13, template-haskell =><br>base==<a href="http://4.13.0.0/installed-4.1..">4.13.0.0/installed-4.1..</a>.)<br>[__7] rejecting: template-haskell-2.15.0.0, template-haskell-2.14.0.0,<br>template-haskell-2.13.0.0, template-haskell-2.12.0.0,<br>template-haskell-2.11.1.0, template-haskell-2.11.0.0,<br>template-haskell-2.10.0.0, template-haskell-2.9.0.0, template-haskell-2.8.0.0,<br>template-haskell-2.7.0.0, template-haskell-2.6.0.0, template-haskell-2.5.0.0,<br>template-haskell-2.4.0.1, template-haskell-2.4.0.0, template-haskell-2.3.0.1,<br>template-haskell-2.3.0.0, template-haskell-2.2.0.0 (constraint from<br>non-upgradeable package requires installed instance)<br>[__7] fail (backjumping, conflict set: cabal-install, hackage-security,<br>template-haskell)<br>After searching the rest of the dependency tree exhaustively, these were the<br>goals I've had most trouble fulfilling: base, cabal-install, directory,<br>template-haskell, process, time, network, pretty, hackage-security, deepseq,<br><div class="gmail_default" style="font-family:"times new roman",serif;font-size:large"><span style="font-family:Arial,Helvetica,sans-serif;font-size:small">HTTP, stm, cabal-install:lib</span></div><div class="gmail_default" style="font-family:"times new roman",serif;font-size:large"><br></div><div class="gmail_default" style="font-family:"times new roman",serif;font-size:large"></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Aug 26, 2019 at 6:25 AM Ben Gamari <<a href="mailto:ben@well-typed.com">ben@well-typed.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>
Hello everyone,<br>
<br>
The GHC team is pleased to announce the release candidate for GHC 8.8.1.<br>
The source distribution, binary distributions, and documentation are<br>
available at<br>
<br>
<a href="https://downloads.haskell.org/ghc/8.8.1" rel="noreferrer" target="_blank">https://downloads.haskell.org/ghc/8.8.1</a><br>
<br>
This release is the culmination of over 3000 commits by over one hundred<br>
contributors and has several new features and numerous bug fixes<br>
relative to GHC 8.6:<br>
<br>
* Visible kind applications are now supported (GHC Proposal #15)<br>
<br>
* Profiling now works correctly on 64-bit Windows (although still may<br>
be problematic on 32-bit Windows due to platform limitations; see<br>
#15934)<br>
<br>
* A new code layout algorithm for amd64's native code generator<br>
significantly improving the runtime performance of some kernels<br>
<br>
* The introduction of a late lambda-lifting pass which may reduce<br>
allocations significantly for some programs.<br>
<br>
* Further work on Trees That Grow, enabling improved code re-use of the<br>
Haskell AST in tooling<br>
<br>
* Users can write `forall` in more contexts (GHC Proposal #7)<br>
<br>
* The pattern-match checker is now more precise in the presence of<br>
strict fields with uninhabited types.<br>
<br>
* A comprehensive audit of GHC's memory ordering barriers has been<br>
performed, resulting in a number of fixes that should significantly<br>
improve the reliability of programs on architectures with<br>
weakly-ordered memory models (e.g. PowerPC, many ARM and AArch64<br>
implementations).<br>
<br>
* A long-standing linker limitation rendering GHCi unusable with<br>
projects with cyclic symbol dependencies has been fixed (#13786)<br>
<br>
* Further work on the Hadrian build system<br>
<br>
* Countless miscellaneous bug-fixes<br>
<br>
Unfortunately, due to a build issue (#17108) found late in the release process<br>
i386 Windows builds are currently unavailable. These will be provided in<br>
the coming weeks.<br>
<br>
As always, if anything looks amiss do let us know.<br>
<br>
Happy compiling!<br>
<br>
Cheers,<br>
<br>
- Ben<br>
<br>
<br>
[1] <a href="https://downloads.haskell.org/ghc/8.8.1/docs/html/users_guide/8.8.1-notes.html" rel="noreferrer" target="_blank">https://downloads.haskell.org/ghc/8.8.1/docs/html/users_guide/8.8.1-notes.html</a><br>
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</blockquote></div></div>