Expose CABAL_PROJECT_LOCAL_TEMPLATE as a /nix/store/ file

input-output-hk · Aug 31, 2023 · 2667523 · 2667523
1 parent f87e924
commit 2667523
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Showing 5 changed files with 41 additions and 32 deletions.
diff --git a/cross-js.nix b/cross-js.nix
@@ -35,6 +35,7 @@ let tool-version-map = import ./tool-map.nix;
           ${compiler}/bin/${compiler.targetPrefix}hsc2hs --cross-compile "$@"
         '';
     };
+    quirks = (import ./quirks.nix { inherit pkgs; });
 in
 pkgs.mkShell ({
     # Note [cabal override]:
@@ -58,13 +59,7 @@ pkgs.mkShell ({
     ];
     # hardeningDisable = pkgs.lib.optionals pkgs.stdenv.hostPlatform.isMusl [ "format" "pie" ];
 
-    CABAL_PROJECT_LOCAL_TEMPLATE = with pkgs; ''
-    package digest
-    constraints:
-    HsOpenSSL +use-pkg-config,
-    zlib +pkg-config
-    pcre-lite +pkg-config
-    '';
+    CABAL_PROJECT_LOCAL_TEMPLATE = quicks.CABAL_PROJECT_LOCAL_TEMPLATE;
 
     shellHook = with pkgs; ''
         export PS1="\[\033[01;33m\][\w]$\[\033[00m\] "
@@ -73,6 +68,7 @@ pkgs.mkShell ({
         echo "Revision (input-output-hk/devx): ${if self ? rev then self.rev else "unknown/dirty checkout"}."
         export CABAL_DIR=$HOME/.cabal-js
         echo "CABAL_DIR set to $CABAL_DIR"
+        ${quirks.shellHook}
     '';
     buildInputs = [];
 

diff --git a/cross-windows.nix b/cross-windows.nix
@@ -96,6 +96,7 @@ let tool-version-map = import ./tool-map.nix;
             "$@"
         '';
     };
+    quirks = (import ./quirks.nix { inherit pkgs; });
 in
 pkgs.pkgsBuildBuild.mkShell ({
     # Note [cabal override]:
@@ -118,13 +119,7 @@ pkgs.pkgsBuildBuild.mkShell ({
     # "--enable-executable-static"
     ];
 
-    CABAL_PROJECT_LOCAL_TEMPLATE = ''
-    package digest
-    constraints:
-    HsOpenSSL +use-pkg-config,
-    zlib +pkg-config
-    pcre-lite +pkg-config
-    '';
+    CABAL_PROJECT_LOCAL_TEMPLATE = quicks.CABAL_PROJECT_LOCAL_TEMPLATE;
 
     shellHook = with pkgs; ''
       export PS1="\[\033[01;33m\][\w]$\[\033[00m\] "
@@ -133,6 +128,7 @@ pkgs.pkgsBuildBuild.mkShell ({
       echo "Revision (input-output-hk/devx): ${if self ? rev then self.rev else "unknown/dirty checkout"}."
       export CABAL_DIR=$HOME/.cabal-windows
       echo "CABAL_DIR set to $CABAL_DIR"
+      ${quirks.shellHook}
     '';
     buildInputs = [];
 

diff --git a/flake.nix b/flake.nix
@@ -61,6 +61,13 @@
            #
            # nix develop github:input-output-hk/devx#ghc924 --no-write-lock-file -c cabal build
            #
+           static-pkgs = if pkgs.stdenv.hostPlatform.isLinux
+                         then if pkgs.stdenv.hostPlatform.isAarch64
+                              then pkgs.pkgsCross.aarch64-multiplatform-musl
+                              else pkgs.pkgsCross.musl64
+                         else pkgs;
+           js-pkgs = pkgs.pkgsCross.ghcjs;
+           windows-pkgs = pkgs.pkgsCross.mingwW64;
            devShellsWithToolsModule = toolsModule:
              let compilers = pkgs: builtins.removeAttrs pkgs.haskell-nix.compiler
                 # Exclude old versions of GHC to speed up `nix flake check`
@@ -85,13 +92,6 @@
                    (builtins.removeAttrs (compilers pkgs)
                      [
                      ]);
-                 static-pkgs = if pkgs.stdenv.hostPlatform.isLinux
-                               then if pkgs.stdenv.hostPlatform.isAarch64
-                                    then pkgs.pkgsCross.aarch64-multiplatform-musl
-                                    else pkgs.pkgsCross.musl64
-                               else pkgs;
-                 js-pkgs = pkgs.pkgsCross.ghcjs;
-                 windows-pkgs = pkgs.pkgsCross.mingwW64;
              in (builtins.mapAttrs (compiler-nix-name: compiler:
                   import ./dynamic.nix { inherit pkgs self compiler compiler-nix-name toolsModule; withIOG = false; }
                   ) (compilers pkgs)
@@ -202,6 +202,9 @@
               };
             })) devShellsWithEvalOnLinux) // {
           };
+        packages.cabalProjectLocal.static        = (import ./quirks.nix { pkgs = static-pkgs; static = true; }).template;
+        packages.cabalProjectLocal.cross-js      = (import ./quirks.nix { pkgs = js-pkgs;                    }).template;
+        packages.cabalProjectLocal.cross-windows = (import ./quirks.nix { pkgs = windows-pkgs;               }).template;
        });
 
     # --- Flake Local Nix Configuration ----------------------------

diff --git a/quirks.nix b/quirks.nix
@@ -0,0 +1,22 @@
+{ pkgs, static ? false }: rec {
+  CABAL_PROJECT_LOCAL_TEMPLATE = with pkgs; ''
+  package digest
+  ${if static then "extra-lib-dirs: ${zlib}/lib ${pcre}/lib" else ""}
+  constraints:
+    HsOpenSSL +use-pkg-config,
+    zlib +pkg-config,
+    pcre-lite +pkg-config
+  '';
+  template = pkgs.writeTextFile {
+    name = "cabal.project.local";
+    text = CABAL_PROJECT_LOCAL_TEMPLATE;
+  };
+  shellHook = ''
+    echo "Quirks:"
+    echo -e "\tif you have the zlib, HsOpenSSL, or digest package in your dependency tree, please make sure to"
+    echo -e "\tcat ${template} >> cabal.project.local"
+    function patchProjectLocal() {
+      cat ${template} >> "$1"
+    }
+  '';
+}
diff --git a/static.nix b/static.nix
@@ -50,6 +50,7 @@ let tool-version-map = import ./tool-map.nix;
         esac
         '';
     };
+    quirks = (import ./quirks.nix { inherit pkgs; static = true; });
 in
 pkgs.mkShell (rec {
     # Note [cabal override]:
@@ -73,14 +74,7 @@ pkgs.mkShell (rec {
     ];
     hardeningDisable = pkgs.lib.optionals pkgs.stdenv.hostPlatform.isMusl [ "format" "pie" ];
 
-    CABAL_PROJECT_LOCAL_TEMPLATE = with pkgs; ''
-    package digest
-      extra-lib-dirs: ${zlib}/lib ${pcre}/lib
-    constraints:
-      HsOpenSSL +use-pkg-config,
-      zlib +pkg-config,
-      pcre-lite +pkg-config
-    '';
+    CABAL_PROJECT_LOCAL_TEMPLATE = quirks.CABAL_PROJECT_LOCAL_TEMPLATE;
 
     # This is required to prevent
     #
@@ -102,9 +96,7 @@ pkgs.mkShell (rec {
         export CABAL_DIR=$HOME/.cabal-static
         echo "CABAL_DIR set to $CABAL_DIR"
         echo "DYLD_LIBRARY_PATH set to $DYLD_LIBRARY_PATH"
-        echo "Quirks:"
-        echo -e "\tif you have the zlib, HsOpenSSL, or digest package in your dependency tree, please make sure to"
-        echo -e "\techo \"\$CABAL_PROJECT_LOCAL_TEMPLATE\" > cabal.project.local"
+        ${quirks.shellHook}
     '';
 
     # these are _target_ libs, e.g. ones we want to link the build