Branch: refs/heads/ghc-split-sections
Home: https://github.com/NixOS/nixpkgs
Commit: f031f3105a814ec8e9c8d3930c7d3cdd9c3dc9c2
https://github.com/NixOS/nixpkgs/commit/f031f3105a814ec8e9c8d3930c7d3cdd9c3dc9c2
Author: Domen Kožar <do...@dev.si>
Date: 2017-02-07 (Tue, 07 Feb 2017)
Changed paths:
M pkgs/development/haskell-modules/generic-builder.nix
M pkgs/development/haskell-modules/lib.nix
Log Message:
-----------
GHC 8.0.2: use -split-sections
-split-sections replaced -split-objs with following upsides:
1) -split-objs adds considerable overhead to compile time
2) combined with stripping, it causes issues when cross-compiling
For upstream see https://ghc.haskell.org/trac/ghc/ticket/8405
This is supported only for Linux/Windows using ld linker.
GHC master also turns on -split-sections by default.
Example using stack:
Without splitting
$ du /nix/store/5paayhibayr73zqfaj458g4k4mv108jn-stack-1.3.2
4
/nix/store/5paayhibayr73zqfaj458g4k4mv108jn-stack-1.3.2/share/bash-completion/completions
4
/nix/store/5paayhibayr73zqfaj458g4k4mv108jn-stack-1.3.2/share/bash-completion
4 /nix/store/5paayhibayr73zqfaj458g4k4mv108jn-stack-1.3.2/share
23416 /nix/store/5paayhibayr73zqfaj458g4k4mv108jn-stack-1.3.2/bin
23420 /nix/store/5paayhibayr73zqfaj458g4k4mv108jn-stack-1.3.2
With -split-objs
$ du /nix/store/fypymm529adpx71gdzm0851xz42wdbz0-stack-1.3.2
20632 /nix/store/fypymm529adpx71gdzm0851xz42wdbz0-stack-1.3.2/bin
4
/nix/store/fypymm529adpx71gdzm0851xz42wdbz0-stack-1.3.2/share/bash-completion/completions
4
/nix/store/fypymm529adpx71gdzm0851xz42wdbz0-stack-1.3.2/share/bash-completion
4 /nix/store/fypymm529adpx71gdzm0851xz42wdbz0-stack-1.3.2/share
20636 /nix/store/fypymm529adpx71gdzm0851xz42wdbz0-stack-1.3.2
With -split-sections
$ du /nix/store/40l6krinx1zx41lr87c4m12hxj4ldf3x-stack-1.3.2
4
/nix/store/40l6krinx1zx41lr87c4m12hxj4ldf3x-stack-1.3.2/share/bash-completion/completions
4
/nix/store/40l6krinx1zx41lr87c4m12hxj4ldf3x-stack-1.3.2/share/bash-completion
4 /nix/store/40l6krinx1zx41lr87c4m12hxj4ldf3x-stack-1.3.2/share
20672 /nix/store/40l6krinx1zx41lr87c4m12hxj4ldf3x-stack-1.3.2/bin
20676 /nix/store/40l6krinx1zx41lr87c4m12hxj4ldf3x-stack-1.3.2
Note: you currently need following overrides to build stack on 802:
vector-algorithms = dontCheck super.vector-algorithms;
path-io = doJailbreak super.path-io;
stack = doJailbreak super.stack;
Note: Should also work on GHC 8.0.1, but I'm being careful here.
We could backport later on.
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