Add static build with Nix (fixes #1295) (#1494)

* Include modifications to nixpkgs and static-haskell-nix as patches. * use the patched static-haskell-nix version * Add cachix postgrest
2020-05-12 13:31:37 -05:00
parent 6fae07241f
commit 7c0fbf9b3f
7 changed files with 385 additions and 7 deletions
@@ -0,0 +1,90 @@
+{ mkDerivation
+, array
+, base
+, base-compat
+, base-orphans
+, binary
+, bytestring
+, containers
+, deepseq
+, Diff
+, directory
+, filepath
+, integer-logarithms
+, mtl
+, optparse-applicative
+, parsec
+, pretty
+, process
+, QuickCheck
+, stdenv
+, stm
+, tagged
+, tar
+, tasty
+, tasty-golden
+, tasty-hunit
+, tasty-quickcheck
+, temporary
+, text
+, time
+, transformers
+, tree-diff
+, unix
+}:
+mkDerivation {
+  pname = "Cabal";
+  version = "3.0.0.0";
+  sha256 = "5143ec26d740c1a508c93a8860e64407e7546c29b9817db20ff1595c1968d287";
+  setupHaskellDepends = [ mtl parsec ];
+  libraryHaskellDepends = [
+    array
+    base
+    binary
+    bytestring
+    containers
+    deepseq
+    directory
+    filepath
+    mtl
+    parsec
+    pretty
+    process
+    text
+    time
+    transformers
+    unix
+  ];
+  testHaskellDepends = [
+    array
+    base
+    base-compat
+    base-orphans
+    binary
+    bytestring
+    containers
+    deepseq
+    Diff
+    directory
+    filepath
+    integer-logarithms
+    optparse-applicative
+    pretty
+    process
+    QuickCheck
+    stm
+    tagged
+    tar
+    tasty
+    tasty-golden
+    tasty-hunit
+    tasty-quickcheck
+    temporary
+    text
+    tree-diff
+  ];
+  doCheck = false;
+  homepage = "http://www.haskell.org/cabal/";
+  description = "A framework for packaging Haskell software";
+  license = stdenv.lib.licenses.bsd3;
+}
@@ -0,0 +1,89 @@
+# Turn a Haskell source package (given its name and source) into a derivation
+# for a fully static executable.
+{ nixpkgs, compiler, name, src, patches }:
+let
+  # The nh2/static-haskell-nix project does all the hard work for us for
+  # building static Haskell executables. We apply a patch for PostgREST below
+  # until the respective pull request is merged. See:
+  # https://github.com/nh2/static-haskell-nix/pull/91
+  # statix-haskell-nix builds everything based on Musl instead of glibc, so
+  # there will be a _lot_ to rebuild if you don't use a binary cache.
+  static-haskell-nix =
+    let
+      rev = "749707fc90b781c3e653e67917a7d571fe82ae7b";
+    in
+      builtins.fetchTarball {
+        url = "https://github.com/nh2/static-haskell-nix/archive/${rev}.tar.gz";
+        sha256 = "155spda2lww378bhx68w6dxwqd5y6s9kin3qbgl2m23r3vmk3m3w";
+      };
+
+  patched-static-haskell-nix =
+    patches.applyPatches "patched-static-haskell-nix" static-haskell-nix
+      [
+        patches.static-haskell-nix-postgrest-libpq
+      ];
+
+  haskellPackagesOverrides =
+    lib: final: prev:
+      {
+        # Add our source package.
+        "${name}" = prev.callCabal2nix name src {};
+
+        # cabal2nix depends on Cabal 3.0.*, while our pinned version of Nixpkgs
+        # only provides 2.4 or 3.2. So we pinned 3.0.0.0 in ./Cabal.nix
+        cabal2nix =
+          prev.cabal2nix.overrideScope
+            (self: super: { Cabal = self.callPackage ./Cabal.nix {}; });
+
+        # Pinned version of protolude.
+        protolude =
+          prev.callPackage ../overlays/haskell-packages/protolude.nix {};
+
+        # The tests for the packages below took a long time on static
+        # builds, so we disable them for now - to be investigated.
+        happy = lib.dontCheck prev.happy;
+      };
+
+  # This overlay adds our source package and applies adjustments to the
+  # derivation of other packages that it depends on. The overlay applies to
+  # Haskell packages for the given compiler, which we will later use
+  # with the static-haskell-nix survey.
+  overlay =
+    self: super:
+    # Override the set of Haskell packages at
+    # pkgs.haskell.packages."${compiler}".
+      {
+        haskell = super.haskell // {
+          packages = super.haskell.packages // {
+            "${compiler}" =
+              super.haskell.packages."${compiler}".override
+                { overrides = haskellPackagesOverrides self.haskell.lib; };
+          };
+        };
+      };
+
+  patchedNixpkgs =
+    patches.applyPatches "patched-nixpkgs" nixpkgs
+      [
+        patches.nixpkgs-revert-ghc-bootstrap
+      ];
+
+  # Apply our overlay to the given pkgs.
+  normalPkgs =
+    (import patchedNixpkgs {}).appendOverlays [ overlay ];
+
+  # Each version of GHC needs a specific version of Cabal.
+  defaultCabalPackageVersionComingWithGhc =
+    {
+      ghc883 = "Cabal_3_2_0_0";
+    }."${compiler}";
+
+  # Let the static-haskell-nix project do the hard work of deriving a set of
+  # fully static Haskell executables, including one for the our source package
+  # that we added through the overlay.
+  survey =
+    import "${patched-static-haskell-nix}/survey"
+      { inherit normalPkgs compiler defaultCabalPackageVersionComingWithGhc; };
+in
+  # Return the fully static derivation of our source package.
+survey.haskellPackages."${name}"