From 446c0feadf7ca4a3289a5a0c9e0bbe0e74801f12 Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph.amissah@gmail.com>
Date: Sun, 4 Jun 2023 18:18:21 -0400
Subject: nix use overlays when convenient

---
 flake.nix | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 51 insertions(+), 9 deletions(-)

(limited to 'flake.nix')

diff --git a/flake.nix b/flake.nix
index 7e89065..4f487f0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -19,6 +19,18 @@
       dub test --combined --skip-registry=all
       runHook postCheck
     '';
+    localOverlay = (final: prev: {
+      ldc = prev.callPackage ./nix-overlays/ldc {  };
+      dmd = prev.callPackage ./nix-overlays/dmd {  };
+      dub = prev.callPackage ./nix-overlays/dub {  };       # -> ?
+      #gdc = prev.callPackage ./nix-overlays/gdc {  };      # empty
+    });
+    pkgsForSystem = system: import nixpkgs {
+      overlays = [
+        localOverlay
+      ];
+      inherit system;
+    };
     installPhase = ''
       runHook preInstall
       mkdir -p $out/bin
@@ -31,9 +43,10 @@
     '';
   in {
     packages = forAllSystems (system: let
+      pkgs-ovl = pkgsForSystem system;
       pkgs = nixpkgsFor.${system};
     in
-      with pkgs; {
+      with pkgs-ovl; {
         default = stdenv.mkDerivation {
           inherit pname;
           inherit version;
@@ -53,7 +66,7 @@
             done
             if [ "$DC" == "" ]; then exit "Error: could not find D compiler"; fi
             echo "$DC_ used as D compiler to build $pname"
-            dub build --compiler=$DC --build=$DC_ --combined --skip-registry=all
+            dub build --cache=local --compiler=$DC --build=$DC_ --combined --skip-registry=all
             runHook postBuild
           '';
           inherit checkPhase;
@@ -72,7 +85,7 @@
           nativeBuildInputs = [dub dmd gnumake];
           buildPhase = ''
             runHook preBuild
-            dub build --compiler=$(type -P dmd) --build=dmd --combined --skip-registry=all
+            dub build --cache=local --compiler=$(type -P dmd) --build=dmd --combined --skip-registry=all
             runHook postBuild
           '';
           inherit checkPhase;
@@ -91,7 +104,7 @@
           nativeBuildInputs = [dub ldc gnumake];
           buildPhase = ''
             runHook preBuild
-            dub build --compiler=$(type -P ldc2) --build=ldc2 --combined --skip-registry=all
+            dub build --cache=local --compiler=$(type -P ldc2) --build=ldc2 --combined --skip-registry=all
             runHook postBuild
           '';
           inherit checkPhase;
@@ -110,7 +123,7 @@
         #  nativeBuildInputs = [ dub gdc gnumake ];
         #  buildPhase = ''
         #    runHook preBuild
-        #    dub build --compiler=$(type -P gdc) --build=gdc --combined --skip-registry=all
+        #    dub build --cache=local --compiler=$(type -P gdc) --build=gdc --combined --skip-registry=all
         #    runHook postBuild
         #  '';
         #  inherit checkPhase;
@@ -126,13 +139,14 @@
       };
     });
     devShells = forAllSystems (system: let
+      pkgs-ovl = pkgsForSystem system;
       pkgs = nixpkgsFor.${system};
       shellHook = ''
-        export DFLAGS="-O2 -inline -boundscheck=on -color=on"
+        export DFLAGS="-O2 -boundscheck=on"
         export Date=`date "+%Y%m%d"`
       '';
     in
-      with pkgs; {
+      with pkgs-ovl; {
         devShell = mkShell {
           name = "spine base dev shell";
           inherit shell;
@@ -141,9 +155,37 @@
           #nativeBuildInputs = [ dub dmd ldc gdc gnumake ];
           packages = [
             sqlite
-            dub
+            ldc
             #dmd
+            dub
+            gnumake
+          ];
+          inherit shellHook;
+        };
+        devShell-dmd = mkShell {
+          name = "spine base dev shell";
+          inherit shell;
+          inherit devEnv;
+          #buildInputs = [ sqlite ];
+          #nativeBuildInputs = [ dub dmd ldc gdc gnumake ];
+          packages = [
+            sqlite
+            dmd
+            dub
+            gnumake
+          ];
+          inherit shellHook;
+        };
+        devShell-ldc = mkShell {
+          name = "spine base dev shell";
+          inherit shell;
+          inherit devEnv;
+          #buildInputs = [ sqlite ];
+          #nativeBuildInputs = [ dub dmd ldc gdc gnumake ];
+          packages = [
+            sqlite
             ldc
+            dub
             gnumake
           ];
           inherit shellHook;
@@ -154,7 +196,7 @@
           inherit devEnv;
           packages = [
             dub
-            dmd
+            #dmd
             ldc
             gnumake
             sqlite
-- 
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