squawk: init at 0.20.0

Squawk is a useful tool for linting PostgreSQL DDL migrations for
potential downtime risks.

Squawk 0.20.0 was released without updating Cargo.lock, so I patched
that. There was also a test that failed because it snapshots the
internal version of the PostgreSQL parser and there was a minor version
difference. I patched that as well.

Each version of libpg_query corresponds to the PostgreSQL version from
which the parser code is extracted. There are slightly different
abstract syntax trees produced by different versions of PostgreSQL and
Squawk doesn't handle the latest one available in nixpkgs. Override it
just for Squawk.

I pulled this from 45bff9e87b.

pkgs/development/tools/squawk/correct-Cargo.lock.patch

@@ -0,0 +1,13 @@
+diff --git a/Cargo.lock b/Cargo.lock
+index d5803a8..384224d 100644
+--- a/Cargo.lock
++++ b/Cargo.lock
+@@ -1585,7 +1585,7 @@ checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
+ 
+ [[package]]
+ name = "squawk"
+-version = "0.19.0"
++version = "0.20.0"
+ dependencies = [
+  "atty",
+  "base64 0.12.3",

pkgs/development/tools/squawk/default.nix

@@ -0,0 +1,67 @@
+{ darwin
+, fetchFromGitHub
+, lib
+, libiconv
+, libpg_query
+, openssl
+, pkg-config
+, rustPlatform
+, stdenv
+}:
+let
+  # The query parser produces a slightly different AST between major versions
+  # and Squawk is not capable of handling >=14 correctly yet.
+  libpg_query13 = libpg_query.overrideAttrs (_: rec {
+    version = "13-2.2.0";
+    src = fetchFromGitHub {
+      owner = "pganalyze";
+      repo = "libpg_query";
+      rev = version;
+      hash = "sha256-gEkcv/j8ySUYmM9lx1hRF/SmuQMYVHwZAIYOaCQWAFs=";
+    };
+  });
+in
+rustPlatform.buildRustPackage rec {
+  pname = "squawk";
+  version = "0.20.0";
+
+  src = fetchFromGitHub {
+    owner = "sbdchd";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256-v9F+HfscX4dIExIP1YvxOldZPPtmxh8lO3SREu6M+C0=";
+  };
+
+  cargoHash = "sha256-kSaQxqom8LSCOQBoIZ1iv+q2+Ih8l61L97xXv5c4a0k=";
+
+  cargoPatches = [
+    ./correct-Cargo.lock.patch
+  ];
+
+  patches = [
+    ./fix-postgresql-version-in-snapshot-test.patch
+  ];
+
+  nativeBuildInputs = [
+    pkg-config
+    rustPlatform.bindgenHook
+  ];
+
+  buildInputs = lib.optionals (!stdenv.isDarwin) [
+    libiconv
+    openssl
+  ] ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+    CoreFoundation
+    Security
+  ]);
+
+  LIBPG_QUERY_PATH = libpg_query13;
+
+  meta = with lib; {
+    description = "Linter for PostgreSQL, focused on migrations";
+    homepage = "https://squawkhq.com/";
+    changelog = "https://github.com/sbdchd/squawk/blob/v${version}/CHANGELOG.md";
+    license = licenses.gpl3Only;
+    maintainers = with lib.maintainers; [ andrewsmith ];
+  };
+}

pkgs/development/tools/squawk/fix-postgresql-version-in-snapshot-test.patch

@@ -0,0 +1,13 @@
+diff --git a/parser/src/snapshots/squawk_parser__parse__tests__parse_sql_query_json.snap b/parser/src/snapshots/squawk_parser__parse__tests__parse_sql_query_json.snap
+index 7273b74..ae94927 100644
+--- a/parser/src/snapshots/squawk_parser__parse__tests__parse_sql_query_json.snap
++++ b/parser/src/snapshots/squawk_parser__parse__tests__parse_sql_query_json.snap
+@@ -133,7 +133,7 @@ Ok(
+             }),
+         ]),
+         "version": Number(
+-            130003,
++            130008,
+         ),
+     }),
+ )

pkgs/top-level/all-packages.nix

@@ -5663,6 +5663,8 @@ with pkgs;
 
   sqlint = callPackage ../development/tools/sqlint { };
 
+  squawk = callPackage ../development/tools/squawk { };
+
   antibody = callPackage ../shells/zsh/antibody { };
 
   antigen = callPackage ../shells/zsh/antigen { };