shards: 0.17.4 -> 0.19.1; migrate to pkgs/by-name (#380841)

pkgs/by-name/sh/shards/package.nix

···
+{
+  lib,
+  fetchFromGitHub,
+  crystal,
+}:
+
+crystal.buildCrystalPackage rec {
+  pname = "shards";
+  version = "0.19.1";
+
+  src = fetchFromGitHub {
+    owner = "crystal-lang";
+    repo = "shards";
+    tag = "v${version}";
+    hash = "sha256-LOdI389nVsFXkKPKco1C+O710kBlWImzCvdBBYEsWQQ=";
+  };
+
+  # we cannot use `make` or `shards` here as it would introduce a cyclical dependency
+  format = "crystal";
+  shardsFile = ./shards.nix;
+  crystalBinaries.shards.src = "./src/shards.cr";
+
+  # tries to execute git which fails spectacularly
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Dependency manager for the Crystal language";
+    mainProgram = "shards";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ peterhoeg ];
+    inherit (crystal.meta) homepage platforms;
+  };
+}

pkgs/development/tools/build-managers/shards/default.nix

···
-{
-  lib,
-  fetchFromGitHub,
-  crystal,
-}:
-
-let
-  generic =
-    { version, hash }:
-
-    crystal.buildCrystalPackage {
-      pname = "shards";
-      inherit version;
-
-      src = fetchFromGitHub {
-        owner = "crystal-lang";
-        repo = "shards";
-        rev = "v${version}";
-        inherit hash;
-      };
-
-      # we cannot use `make` or `shards` here as it would introduce a cyclical dependency
-      format = "crystal";
-      shardsFile = ./shards.nix;
-      crystalBinaries.shards.src = "./src/shards.cr";
-
-      # tries to execute git which fails spectacularly
-      doCheck = false;
-
-      meta = with lib; {
-        description = "Dependency manager for the Crystal language";
-        mainProgram = "shards";
-        license = licenses.asl20;
-        maintainers = with maintainers; [ peterhoeg ];
-        inherit (crystal.meta) homepage platforms;
-      };
-    };
-
-in
-rec {
-  shards_0_17 = generic {
-    version = "0.17.4";
-    hash = "sha256-DAFKmr57fW2CWiexbP4Mvoqfh9ALpYEZv3NFK4Z4Zo4=";
-  };
-
-  shards = shards_0_17;
-}

pkgs/top-level/all-packages.nix

···
     (if stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64 then lib.id else haskell.lib.compose.justStaticExecutables)
     haskellPackages.shake;
 
-  inherit (callPackage ../development/tools/build-managers/shards { })
-    shards_0_17
-    shards;
-
   shellcheck = callPackage ../development/tools/shellcheck {
     inherit (__splicedPackages.haskellPackages) ShellCheck;
   };