bashup-events: init at it's-complicated

2021-01-18 12:51:05 -06:00
parent 6fd9283bba
commit 28f68fd831
5 changed files with 137 additions and 0 deletions
@@ -0,0 +1,83 @@
+{
+  # general
+  lib
+, callPackage
+, runCommand
+, resholvePackage
+, bash
+, shellcheck
+, doCheck ? true
+, doInstallCheck ? true
+  # variant-specific
+, variant
+, version
+, branch
+, src
+, fake ? false
+, keep
+}:
+let
+  # extracting this so that it's trivial to test in other shells
+  installCheck = shell:
+    ''
+      echo "testing bashup.events in ${shell}"
+      ${shell} <<'EOF'
+      source $out/bin/bashup.events
+      neat(){
+        echo $0: Hi from event \'test event\'. I can have both $1 and $2 arguments.
+        exit 0
+      }
+      event on "test event" @2 neat curried
+      echo event registered
+      event emit "test event" runtime
+      exit 1 # fail if emitting event didn't exit clean
+      EOF
+    '';
+
+in
+resholvePackage rec {
+  # bashup.events doesn't version yet but it has two variants with
+  # differing features/performance characteristics:
+  # - branch master: a variant for bash 3.2+
+  # - branch bash44: a variant for bash 4.4+
+  pname = "bashup-events${variant}-unstable";
+  # should be YYYY-MM-DD
+  inherit version;
+  inherit src;
+
+  installPhase = ''
+    install -Dt $out/bin bashup.events
+  '';
+
+  inherit doCheck;
+  checkInputs = [ shellcheck bash ];
+
+  # check based on https://github.com/bashup/events/blob/master/.dkrc
+  checkPhase = ''
+    SHELLCHECK_OPTS='-e SC2016,SC2145' ${shellcheck}/bin/shellcheck ./bashup.events
+    ${bash}/bin/bash -n ./bashup.events
+    ${bash}/bin/bash ./bashup.events
+  '';
+
+  solutions = {
+    events = {
+      inputs = [ ];
+      interpreter = "none";
+      scripts = [ "bin/bashup.events" ];
+      inherit keep;
+    } // lib.optionalAttrs (lib.isAttrs fake) { inherit fake; };
+  };
+
+  inherit doInstallCheck;
+  installCheckInputs = [ bash ];
+  installCheckPhase = installCheck "${bash}/bin/bash";
+
+  meta = with lib; {
+    inherit branch;
+    description = "An event listener/callback API for creating extensible bash programs";
+    homepage = "https://github.com/bashup/events";
+    license = licenses.cc0;
+    maintainers = with maintainers; [ abathur ];
+    platforms = platforms.all;
+  };
+}