skawarePackages.execline: wrap execlineb with tools

The execlineb program is the launcher (and lexer) of execline scripts.
So it makes a lot of sense to have all the small tools in scope by
default.
We append to the end of PATH so that they can be easily overwritten by
the user.

Co-authored-by: Alyssa Ross <hi@alyssa.is>

pkgs/build-support/skaware/build-skaware-package.nix

@@ -19,6 +19,10 @@ in {
   # mostly for moving and deleting files from the build directory
   # : lines
 , postInstall
+  # packages with setup hooks that should be run
+  # (see definition of `makeSetupHook`)
+  # : list drv
+, setupHooks ? []
   # : list Maintainer
 , maintainers ? []
 
@@ -82,6 +86,8 @@ in stdenv.mkDerivation {
   dontDisableStatic = true;
   enableParallelBuilding = true;
 
+  nativeBuildInputs = setupHooks;
+
   configureFlags = configureFlags ++ [
     "--enable-absolute-paths"
     (if stdenv.isDarwin

pkgs/tools/misc/execline/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, skawarePackages }:
+{ stdenv, skawarePackages, makeWrapper }:
 
 with skawarePackages;
 
@@ -11,6 +11,8 @@ buildPackage {
 
   outputs = [ "bin" "lib" "dev" "doc" "out" ];
 
+  setupHooks = [ makeWrapper ];
+
   # TODO: nsss support
   configureFlags = [
     "--libdir=\${lib}/lib"
@@ -30,6 +32,11 @@ buildPackage {
 
     mv doc $doc/share/doc/execline/html
     mv examples $doc/share/doc/execline/examples
+
+    # finally, add all tools to PATH so they are available
+    # from within execlineb scripts by default
+    wrapProgram $bin/bin/execlineb \
+      --suffix PATH : $bin/bin
   '';
 
 }