Some of that looks like churn from trying to install an older version of Yesod over a newer one. Are you using a sandbox? if so, did you wipe it out before attempting Yesod 1.2.6.1? What we'd be looking for is a package conflict that tells you which package of what version that is globally installed is causing the conflict.

Insta-Yesodian conflict implies you're reinstalling into a not-fresh packgage-db which means you either need to wipe your user package-db or use a sandbox. (I recommend the latter).

If you haven't done so, do that, then re-attempt that version of Yesod (1.2.6.1).

On Thu, Jun 18, 2015 at 2:57 PM, Miguel A. Santos <miguel.a.santos.l@gmail.com> wrote:

Thanks! No problem. I gave a try to your suggestion. It doesn't look I'll get yesod installed without "paying"

a bigger price than just "downgrading". :-/

Yesod 1.4.0 warns that forcing installing it will likely break pandoc, among other things.

I can give it a try though, but I really use pandoc regularly. Plus, it's still not clear that the building process

will not fail. And installing pandoc took me surprisingly a lot of time last time.

Forcing Yesod-1.2.6.1 won't allow cabal to satisfy the dependencies.

I guess I could keep trying other versions and see. But I think I'll try the 1.4.0 first. Will post here

the results so that at least others may hopefully benefit from this.

-----------------------------------------------------------------------------------------
 msantos@MBP-2[15:42]:~/System$cabal install yesod-1.4.0
Resolving dependencies...
In order, the following would be installed:
monad-control-0.3.3.1 (latest: 1.0.0.4) (via: yesod-1.4.0 yesod-core-1.4.9.1 authenticate-1.3.2.11 xml-conduit-1.3.0 persistent-template-2.1.3.3 persistent-2.1.6 monad-logger-0.3.13.1 http-conduit-2.1.5 conduit-extra-1.1.9 resourcet-1.1.5 resource-pool-0.2.3.2 enclosed-exceptions-1.0.1.1 lifted-base-0.2.3.6) (new version)
lifted-base-0.2.3.6 (via: yesod-auth-1.4.5 yesod-core-1.4.9.1 wai-extra-3.0.7.1 persistent-2.1.6 monad-logger-0.3.13.1 http-conduit-2.1.5 conduit-1.2.4.2 resourcet-1.1.5 enclosed-exceptions-1.0.1.1) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
enclosed-exceptions-1.0.1.1 (via: yaml-0.8.11) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
resource-pool-0.2.3.2 (via: yesod-persistent-1.4.0.2 persistent-2.1.6) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
resourcet-1.1.5 (via: yesod-auth-1.4.5 yesod-form-1.4.4.1 yesod-persistent-1.4.0.2 yesod-core-1.4.9.1 yaml-0.8.11 authenticate-1.3.2.11 tagstream-conduit-0.5.5.3 xml-conduit-1.3.0 wai-extra-3.0.7.1 persistent-2.1.6 monad-logger-0.3.13.1 http-conduit-2.1.5 conduit-extra-1.1.9 conduit-1.2.4.2) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
conduit-1.2.4.2 (via: yesod-auth-1.4.5 yesod-persistent-1.4.0.2 yesod-core-1.4.9.1 yaml-0.8.11 authenticate-1.3.2.11 tagstream-conduit-0.5.5.3 xml-conduit-1.3.0 persistent-2.1.6 monad-logger-0.3.13.1 http-conduit-2.1.5 conduit-extra-1.1.9) (reinstall)
conduit-extra-1.1.9 (via: yesod-1.4.0 yesod-auth-1.4.5 yesod-core-1.4.9.1 tagstream-conduit-0.5.5.3 xml-conduit-1.3.0 monad-logger-0.3.13.1) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
http-conduit-2.1.5 (via: yesod-auth-1.4.5 authenticate-1.3.2.11) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
monad-logger-0.3.13.1 (via: yesod-1.4.0 yesod-core-1.4.9.1 persistent-template-2.1.3.3 persistent-2.1.6) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
persistent-2.1.6 (via: yesod-auth-1.4.5 yesod-form-1.4.4.1 yesod-persistent-1.4.0.2 persistent-template-2.1.3.3) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
persistent-template-2.1.3.3 (via: yesod-auth-1.4.5 yesod-persistent-1.4.0.2) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
shakespeare-2.0.5 (via: yesod-1.4.0 yesod-auth-1.4.5 yesod-form-1.4.4.1 yesod-core-1.4.9.1) (new package)
wai-extra-3.0.7.1 (via: yesod-1.4.0 yesod-core-1.4.9.1) (reinstall)
xml-conduit-1.3.0 (via: authenticate-1.3.2.11 tagstream-conduit-0.5.5.3) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
tagstream-conduit-0.5.5.3 (via: authenticate-1.3.2.11) (reinstall)
authenticate-1.3.2.11 (via: yesod-auth-1.4.5) (reinstall) (changes: monad-control-1.0.0.4 -> 0.3.3.1)
yaml-0.8.11 (via: yesod-1.4.0) (reinstall)
yesod-core-1.4.9.1 (via: yesod-1.4.0 yesod-auth-1.4.5 yesod-form-1.4.4.1 yesod-persistent-1.4.0.2) (new package)
yesod-persistent-1.4.0.2 (via: yesod-1.4.0 yesod-auth-1.4.5 yesod-form-1.4.4.1) (new package)
yesod-form-1.4.4.1 (via: yesod-1.4.0 yesod-auth-1.4.5) (new package)
yesod-auth-1.4.5 (via: yesod-1.4.0) (new package)
yesod-1.4.0 (latest: 1.4.1.5) (new package)
cabal: The following packages are likely to be broken by the reinstalls:
pandoc-citeproc-0.7.1.1
pandoc-1.14.0.4
project-template-0.2.0
http-reverse-proxy-0.4.2
Use --force-reinstalls if you want to install anyway.
msantos@MBP-2[15:42]:~/System$cabal install yesod-1.2.6.1
Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: yesod (user goal)
rejecting: yesod-1.4.1.5, 1.4.1.4, 1.4.1.3, 1.4.1.2, 1.4.1.1, 1.4.1, 1.4.0
(global constraint requires ==1.2.6.1)
trying: yesod-1.2.6.1
trying: streaming-commons-0.1.12.1/installed-200... (dependency of
yesod-1.2.6.1)
trying: warp-3.0.13.1/installed-150... (dependency of yesod-1.2.6.1)
next goal: yesod-form (dependency of yesod-1.2.6.1)
rejecting: yesod-form-1.4.4.1, 1.4.4, 1.4.3.1, 1.4.3, 1.4.2.1, 1.4.2, 1.4.1.1,
1.4.1, 1.4.0.2, 1.4.0.1, 1.4.0 (conflict: yesod => yesod-form>=1.3 && <1.4)
trying: yesod-form-1.3.16
next goal: persistent (dependency of yesod-form-1.3.16)
rejecting: persistent-2.1.6/installed-4f9..., 2.1.6, 2.1.5, 2.1.4, 2.1.3,
2.1.2, 2.1.1.7, 2.1.1.6, 2.1.1.5, 2.1.1.4, 2.1.1.3, 2.1.1.2, 2.1.1.1, 2.1.1,
2.1.0.2, 2.1.0.1, 2.1 (conflict: yesod-form => persistent>=1.2 && <2.1)
trying: persistent-1.3.3
trying: path-pieces-0.2.0/installed-533... (dependency of persistent-1.3.3)
next goal: yesod-core (dependency of yesod-1.2.6.1)
rejecting: yesod-core-1.4.9.1, 1.4.9, 1.4.8.3, 1.4.8.2, 1.4.8.1, 1.4.8,
1.4.7.3, 1.4.7.2, 1.4.7.1, 1.4.7, 1.4.6.2, 1.4.6.1, 1.4.6, 1.4.5, 1.4.4.5,
1.4.4.4, 1.4.4.3, 1.4.4.2, 1.4.4.1, 1.4.4, 1.4.3.1, 1.4.3, 1.4.2, 1.4.1.1,
1.4.1, 1.4.0.2, 1.4.0.1, 1.4.0 (conflict: yesod => yesod-core>=1.2.2 && <1.3)
rejecting: yesod-core-1.2.20.1, 1.2.20, 1.2.19.2, 1.2.19.1, 1.2.19, 1.2.18,
1.2.17, 1.2.16.1, 1.2.16, 1.2.15.2, 1.2.15.1, 1.2.15, 1.2.14, 1.2.13.1,
1.2.13, 1.2.12, 1.2.11.1, 1.2.11, 1.2.10, 1.2.9.2, 1.2.9.1, 1.2.9, 1.2.8,
1.2.7, 1.2.6.7, 1.2.6.6, 1.2.6.5, 1.2.6.4, 1.2.6.3, 1.2.6.2, 1.2.6.1
(conflict: path-pieces==0.2.0/installed-533..., yesod-core =>
path-pieces>=0.1.2 && <0.2)
rejecting: yesod-core-1.2.6 (conflict: streaming-commons =>
text==1.1.0.0/installed-9bd..., yesod-core => text>=0.7 && <0.12)
rejecting: yesod-core-1.2.5, 1.2.4.5, 1.2.4.4, 1.2.4.3, 1.2.4.2, 1.2.4.1,
1.2.4, 1.2.3, 1.2.2 (conflict: warp => wai==3.0.2.3/installed-39c...,
yesod-core => wai>=1.4 && <1.5)
rejecting: yesod-core-1.2.1, 1.2.0.4, 1.2.0.3, 1.2.0.2, 1.2.0.1, 1.2.0,
1.1.8.3, 1.1.8.2, 1.1.8.1, 1.1.8, 1.1.7.2, 1.1.7.1, 1.1.7, 1.1.6.1, 1.1.6,
1.1.5, 1.1.4.2, 1.1.4.1, 1.1.4, 1.1.3.1, 1.1.3, 1.1.2.2, 1.1.2.1, 1.1.2,
1.1.1.2, 1.1.1.1, 1.1.1, 1.1.0.1, 1.1.0, 1.0.1.3, 1.0.1.2, 1.0.1.1, 1.0.1,
1.0.0.2, 1.0.0.1, 1.0.0, 0.10.3, 0.10.2.2, 0.10.2.1, 0.10.2, 0.10.1, 0.9.4.1,
0.9.4, 0.9.3.6, 0.9.3.5, 0.9.3.4, 0.9.3.3, 0.9.3.2, 0.9.3.1, 0.9.3, 0.9.2,
0.9.1.1, 0.9.1, 0.8.3.2, 0.8.3.1, 0.8.3, 0.8.2, 0.8.1, 0.8.0.1, 0.8.0,
0.7.0.2, 0.7.0.1, 0.7.0 (conflict: yesod => yesod-core>=1.2.2 && <1.3)
Backjump limit reached (change with --max-backjumps).

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On Thu, Jun 18, 2015 at 3:32 PM, Christopher Allen <cma@bitemyapp.com> wrote:

Ah that's frustrating, that's my mistake – I'm sorry. I thought you were talking about GHC for Mac OS X not being available for your OS version either.

Your best bet on HP is to specify an older version of Yesod that will work with the dependencies that your version of HP comes with.

On Thu, Jun 18, 2015 at 2:08 PM, Miguel A. Santos <miguel.a.santos.l@gmail.com> wrote:

Indeed I saw that. That's what I meant with the bindist not being available for OSX 10.6.8; only for 10.7+
https://www.haskell.org/ghc/download_ghc_7_8_4#macosx_x86_64

My bad, I should have said it before.

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On Thu, Jun 18, 2015 at 2:36 PM, Christopher Allen <cma@bitemyapp.com> wrote:

Did you see that the Mac instructions said to follow the "other *nix" instructions if you were using an older version of Mac OS X?

Those link here: https://www.haskell.org/ghc/download_ghc_7_8_4#binaries

Get rid of all that (GHC, HP, Cabal), then install GHC using the bindist for Mac OS X linked above.

On Thu, Jun 18, 2015 at 1:14 PM, Miguel A. Santos <miguel.a.santos.l@gmail.com> wrote:

That is obviously a typo: I meant I *did* do a fresh install of the Haskell Platform and cabal before

trying -and failing- to install yesod.

On Thu, Jun 18, 2015 at 1:38 PM, Miguel A. Santos <miguel.a.santos.l@gmail.com> wrote:

This corresponds to a fresh install of the HP, ghc, and cabal I didn't before trying to install yesod.

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Chris Allen

Currently working on http://haskellbook.com