1 files changed, 160 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/tools/rust/cargo-pgrx/buildPgrxExtension.nix b/nixpkgs/pkgs/development/tools/rust/cargo-pgrx/buildPgrxExtension.nix
new file mode 100644
index 000000000000..6aae84d3463b
--- /dev/null
+++ b/nixpkgs/pkgs/development/tools/rust/cargo-pgrx/buildPgrxExtension.nix
@@ -0,0 +1,160 @@
+# preBuildAndTest and some small other bits
+# taken from https://github.com/tcdi/pgrx/blob/v0.9.4/nix/extension.nix
+# (but now heavily modified)
+# which uses MIT License with the following license file
+#
+# MIT License
+#
+# Portions Copyright 2019-2021 ZomboDB, LLC.
+# Portions Copyright 2021-2022 Technology Concepts & Design, Inc. <support@tcdi.com>.
+# All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+{ lib
+, cargo-pgrx
+, pkg-config
+, rustPlatform
+, stdenv
+, Security
+, writeShellScriptBin
+}:
+
+# The idea behind: Use it mostly like rustPlatform.buildRustPackage and so
+# we hand most of the arguments down.
+#
+# Additional arguments are:
+#   - `postgresql` postgresql package of the version of postgresql this extension should be build for.
+#                  Needs to be the build platform variant.
+#   - `useFakeRustfmt` Whether to use a noop fake command as rustfmt. cargo-pgrx tries to call rustfmt.
+#                      If the generated rust bindings aren't needed to use the extension, its a
+#                      unnecessary and heavy dependency. If you set this to true, you also
+#                      have to add `rustfmt` to `nativeBuildInputs`.
+
+{ buildAndTestSubdir ? null
+, buildType ? "release"
+, buildFeatures ? [ ]
+, cargoBuildFlags ? [ ]
+, postgresql
+# cargo-pgrx calls rustfmt on generated bindings, this is not strictly necessary, so we avoid the
+# dependency here. Set to false and provide rustfmt in nativeBuildInputs, if you need it, e.g.
+# if you include the generated code in the output via postInstall.
+, useFakeRustfmt ? true
+, ...
+} @ args:
+let
+  rustfmtInNativeBuildInputs = lib.lists.any (dep: lib.getName dep == "rustfmt") (args.nativeBuildInputs or []);
+in
+
+assert lib.asserts.assertMsg ((args.installPhase or "") == "")
+  "buildPgrxExtensions overwrites the installPhase, so providing one does nothing";
+assert lib.asserts.assertMsg ((args.buildPhase or "") == "")
+  "buildPgrxExtensions overwrites the buildPhase, so providing one does nothing";
+assert lib.asserts.assertMsg (useFakeRustfmt -> !rustfmtInNativeBuildInputs)
+  "The parameter useFakeRustfmt is set to true, but rustfmt is included in nativeBuildInputs. Either set useFakeRustfmt to false or remove rustfmt from nativeBuildInputs.";
+assert lib.asserts.assertMsg (!useFakeRustfmt -> rustfmtInNativeBuildInputs)
+  "The parameter useFakeRustfmt is set to false, but rustfmt is not included in nativeBuildInputs. Either set useFakeRustfmt to true or add rustfmt from nativeBuildInputs.";
+
+let
+  fakeRustfmt = writeShellScriptBin "rustfmt" ''
+    exit 0
+    '';
+  maybeDebugFlag = lib.optionalString (buildType != "release") "--debug";
+  maybeEnterBuildAndTestSubdir = lib.optionalString (buildAndTestSubdir != null) ''
+    export CARGO_TARGET_DIR="$(pwd)/target"
+    pushd "${buildAndTestSubdir}"
+  '';
+  maybeLeaveBuildAndTestSubdir = lib.optionalString (buildAndTestSubdir != null) "popd";
+
+  pgrxPostgresMajor = lib.versions.major postgresql.version;
+  preBuildAndTest = ''
+    export PGRX_HOME=$(mktemp -d)
+    export PGDATA="$PGRX_HOME/data-${pgrxPostgresMajor}/"
+    cargo-pgrx pgrx init "--pg${pgrxPostgresMajor}" ${postgresql}/bin/pg_config
+    echo "unix_socket_directories = '$(mktemp -d)'" > "$PGDATA/postgresql.conf"
+
+    # This is primarily for Mac or other Nix systems that don't use the nixbld user.
+    export USER="$(whoami)"
+    pg_ctl start
+    createuser -h localhost --superuser --createdb "$USER" || true
+    pg_ctl stop
+  '';
+
+  argsForBuildRustPackage = builtins.removeAttrs args [ "postgresql" "useFakeRustfmt" ];
+
+  # so we don't accidentally `(rustPlatform.buildRustPackage argsForBuildRustPackage) // { ... }` because
+  # we forgot parentheses
+  finalArgs = argsForBuildRustPackage // {
+    buildInputs = (args.buildInputs or [ ]) ++ lib.optionals stdenv.isDarwin [ Security ];
+
+    nativeBuildInputs = (args.nativeBuildInputs or [ ]) ++ [
+      cargo-pgrx
+      postgresql
+      pkg-config
+      rustPlatform.bindgenHook
+    ] ++ lib.optionals useFakeRustfmt [ fakeRustfmt ];
+
+    buildPhase = ''
+      runHook preBuild
+
+      echo "Executing cargo-pgrx buildPhase"
+      ${preBuildAndTest}
+      ${maybeEnterBuildAndTestSubdir}
+
+      NIX_PGLIBDIR="${postgresql}/lib" \
+      PGRX_BUILD_FLAGS="--frozen -j $NIX_BUILD_CORES ${builtins.concatStringsSep " " cargoBuildFlags}" \
+      cargo-pgrx pgrx package \
+        --pg-config ${postgresql}/bin/pg_config \
+        ${maybeDebugFlag} \
+        --features "${builtins.concatStringsSep " " buildFeatures}" \
+        --out-dir "$out"
+
+      ${maybeLeaveBuildAndTestSubdir}
+
+      runHook postBuild
+    '';
+
+    preCheck = preBuildAndTest + args.preCheck or "";
+
+    installPhase = ''
+      runHook preInstall
+
+      echo "Executing buildPgrxExtension install"
+
+      ${maybeEnterBuildAndTestSubdir}
+
+      cargo-pgrx pgrx stop all
+
+      mv $out/${postgresql}/* $out
+      rm -rf $out/nix
+
+      ${maybeLeaveBuildAndTestSubdir}
+
+      runHook postInstall
+    '';
+
+    PGRX_PG_SYS_SKIP_BINDING_REWRITE = "1";
+    CARGO_BUILD_INCREMENTAL = "false";
+    RUST_BACKTRACE = "full";
+
+    checkNoDefaultFeatures = true;
+    checkFeatures = (args.checkFeatures or [ ]) ++ [ "pg_test pg${pgrxPostgresMajor}" ];
+  };
+in
+rustPlatform.buildRustPackage finalArgs