Update to the resolver needed to run yesodweb.com on GHC 8.0.2

[seanwestfall]

Hey @snoyberg,
Just wanted to mention that in order to build/run yesodweb.com on Ghc 8.0.2 you need to update the resolver property to lts-8.13 in the stack.yaml file from lts-6.11.

cabal install produces this error:

cabal install
Warning: Constraint refers to an unknown package: bin-package-db installed
(user config /Users/Sean/misc/yesodweb.com/cabal.config)
Resolving dependencies...
cabal: Could not resolve dependencies:
trying: base-4.9.1.0/installed-4.9... (dependency of yesodweb-0.1.0)
next goal: classy-prelude (dependency of yesodweb-0.1.0)
rejecting: classy-prelude-1.2.0.1, classy-prelude-1.2.0, classy-prelude-1.0.2,
classy-prelude-1.0.1, classy-prelude-1.0.0.2, classy-prelude-1.0.0.1,
classy-prelude-1.0.0, classy-prelude-0.12.8, classy-prelude-0.12.7,
classy-prelude-0.12.6, classy-prelude-0.12.5.1, classy-prelude-0.12.5,
classy-prelude-0.12.4, classy-prelude-0.12.3, classy-prelude-0.12.1.1,
classy-prelude-0.12.1, classy-prelude-0.12.0.1, classy-prelude-0.12.0,
classy-prelude-0.11.1.1 (constraint from user config
/Users/Sean/misc/yesodweb.com/cabal.config requires ==0.11.1)
trying: classy-prelude-0.11.1
next goal: primitive (dependency of classy-prelude-0.11.1)
rejecting: primitive-0.6.2.0/installed-457..., primitive-0.6.2.0,
primitive-0.6.1.0, primitive-0.5.4.0, primitive-0.5.3.0, primitive-0.5.2.1,
primitive-0.5.1.0, primitive-0.5.0.1, primitive-0.5, primitive-0.4.1,
primitive-0.4.0.1, primitive-0.4, primitive-0.3.1, primitive-0.3,
primitive-0.2.1, primitive-0.2, primitive-0.1 (constraint from user config
/Users/Sean/misc/yesodweb.com/cabal.config requires ==0.6)
rejecting: primitive-0.6 (conflict: base==4.9.1.0/installed-4.9..., primitive
=> base>=4.3 && <4.9)
Dependency tree exhaustively searched.

and building with stack with the old resolver property leads to this error:

[ 4 of 12] Compiling Yesod.Auth       ( Yesod/Auth.hs, .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth.o )
    ghc: panic! (the 'impossible' happened)
      (GHC version 7.10.3 for x86_64-apple-darwin):
    	Loading temp shared object failed: dlopen(/var/folders/6n/t563zg9s3v78qtnjndr5f5gh0000gn/T/ghc29344_0/libghc_21.dylib, 5): no suitable image found.  Did find:
    	/var/folders/6n/t563zg9s3v78qtnjndr5f5gh0000gn/T/ghc29344_0/libghc_21.dylib: malformed mach-o: load commands size (35488) > 32768

    Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

[snoyberg]

Are you on Sierra? Building the site works fine for me with stack build. (And building with cabal is not supported.)

…

On Sat, May 13, 2017 at 5:13 AM, Sean Westfall ***@***.***> wrote: Hey @snoyberg <https://github.com/snoyberg>, Just wanted to mention that in order to build/run yesodweb.com on Ghc 8.0.2 you need to update the resolver property to lts-8.13 in the stack.yaml file from lts-6.11. cabal install produces this error: cabal install Warning: Constraint refers to an unknown package: bin-package-db installed (user config /Users/Sean/misc/yesodweb.com/cabal.config) Resolving dependencies... cabal: Could not resolve dependencies: trying: base-4.9.1.0/installed-4.9... (dependency of yesodweb-0.1.0) next goal: classy-prelude (dependency of yesodweb-0.1.0) rejecting: classy-prelude-1.2.0.1, classy-prelude-1.2.0, classy-prelude-1.0.2, classy-prelude-1.0.1, classy-prelude-1.0.0.2, classy-prelude-1.0.0.1, classy-prelude-1.0.0, classy-prelude-0.12.8, classy-prelude-0.12.7, classy-prelude-0.12.6, classy-prelude-0.12.5.1, classy-prelude-0.12.5, classy-prelude-0.12.4, classy-prelude-0.12.3, classy-prelude-0.12.1.1, classy-prelude-0.12.1, classy-prelude-0.12.0.1, classy-prelude-0.12.0, classy-prelude-0.11.1.1 (constraint from user config /Users/Sean/misc/yesodweb.com/cabal.config requires ==0.11.1) trying: classy-prelude-0.11.1 next goal: primitive (dependency of classy-prelude-0.11.1) rejecting: primitive-0.6.2.0/installed-457..., primitive-0.6.2.0, primitive-0.6.1.0, primitive-0.5.4.0, primitive-0.5.3.0, primitive-0.5.2.1, primitive-0.5.1.0, primitive-0.5.0.1, primitive-0.5, primitive-0.4.1, primitive-0.4.0.1, primitive-0.4, primitive-0.3.1, primitive-0.3, primitive-0.2.1, primitive-0.2, primitive-0.1 (constraint from user config /Users/Sean/misc/yesodweb.com/cabal.config requires ==0.6) rejecting: primitive-0.6 (conflict: base==4.9.1.0/installed-4.9..., primitive => base>=4.3 && <4.9) Dependency tree exhaustively searched. and building with stack with the old resolver property leads to this error: [ 4 of 12] Compiling Yesod.Auth ( Yesod/Auth.hs, .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth.o ) ghc: panic! (the 'impossible' happened) (GHC version 7.10.3 for x86_64-apple-darwin): Loading temp shared object failed: dlopen(/var/folders/6n/t563zg9s3v78qtnjndr5f5gh0000gn/T/ghc29344_0/libghc_21.dylib, 5): no suitable image found. Did find: /var/folders/6n/t563zg9s3v78qtnjndr5f5gh0000gn/T/ghc29344_0/libghc_21.dylib: malformed mach-o: load commands size (35488) > 32768 Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#21>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AADBBwkD-nLhzzp0AWfEIUx2tlgAKC6Fks5r5RHCgaJpZM4NZ7oy> .

[seanwestfall]

@snoyberg Sorry, finally getting back to this. I'm using both OpenBSD 6.0 and macOS Sierra version 10.12.3. I needed to update to resolver to build on both.

For OpenBSD 6.0

$ uname -a
OpenBSD *** 6.0 GENERIC.MP#2319 amd64

for macOS Sierra

$ uname -a
Darwin Seans-MacBook-Pro.local 16.4.0 Darwin Kernel Version 16.4.0: Thu Dec 22 22:53:21 PST 2016; root:xnu-3789.41.3~3/RELEASE_X86_64 x86_64

maybe it's not that important, but it might be worthwhile to leave a note, like, update the resolver if you see stack build errors, some where incase someone else runs into this problem.