shab: init at 1.0.0 (#56164)

pkgs/tools/text/shab/default.nix

@@ -0,0 +1,74 @@
+{ bash, stdenv, lib, runCommand, writeText, fetchFromGitHub }:
+let
+  version = "1.0.0";
+
+  shab = stdenv.mkDerivation {
+    pname = "shab";
+    inherit version;
+
+    src = fetchFromGitHub {
+      owner = "zimbatm";
+      repo = "shab";
+      rev = "v${version}";
+      sha256 = "02lf1s6plhhcfyj9xha44wij9jbphb1x5q55xj3b5bx2ji2jsvji";
+    };
+
+    postPatch = ''
+      for f in test.sh test/*.sh; do
+        patchShebangs "$f"
+      done
+    '';
+
+    doBuild = false;
+    doCheck = true;
+    doInstallCheck = true;
+
+    checkPhase = ''
+      ./test.sh
+    '';
+
+    installPhase = ''
+      mkdir -p $out/bin
+      cp ./shab $out/bin/shab
+    '';
+
+    installCheckPhase = ''
+      [[ "$(echo 'Hello $entity' | entity=world $out/bin/shab)" == 'Hello world' ]]
+    '';
+
+    passthru = {
+      inherit render renderText;
+    };
+
+    meta = with lib; {
+      description = "The bash templating language";
+      homepage = https://github.com/zimbatm/shab;
+      license = licenses.unlicense;
+      maintainers = with maintainers; [ zimbatm ];
+      platforms = bash.meta.platforms;
+    };
+  };
+
+  /*
+     shabScript:       a path or filename to use as a template
+     parameters.name:  the name to use as part of the store path
+     parameters:       variables to expose to the template
+   */
+  render = shabScript: parameters:
+    let extraParams = {
+          inherit shabScript;
+        };
+    in runCommand "out" (parameters // extraParams) ''
+      ${shab}/bin/shab "$shabScript" >$out
+    '';
+
+  /*
+     shabScriptText:   a string to use as a template
+     parameters.name:  the name to use as part of the store path
+     parameters:       variables to expose to the template
+   */
+  renderText = shabScriptText: parameters:
+    render (writeText "template" shabScriptText) parameters;
+
+in
+  shab

pkgs/top-level/all-packages.nix

@@ -1615,6 +1615,8 @@ in
 
   s2png = callPackage ../tools/graphics/s2png { };
 
+  shab = callPackage ../tools/text/shab { };
+
   simg2img = callPackage ../tools/filesystems/simg2img { };
 
   snipes = callPackage ../games/snipes { };