simplify drv

.gitignore

@@ -1 +1,3 @@
 /.flox
+result
+result-*

pkgs/etc-profiles/default.nix

@@ -1,63 +1,103 @@
-{ self, inputs, lib, buildEnv, runCommand, bash, coreutils, hostPlatform, system }:
+# ============================================================================ #
+#
+# Creates a starter `<env>/etc/profile' that aggregates
+# `<env>/etc/profile.d/*.sh' "child scripts".
+#
+# ---------------------------------------------------------------------------- #
 
+{ self, inputs, lib, config, bash, coreutils, hostPlatform, system }: let
 
-let
-  pname = "etc-profiles";
-  version = "0.1.0-${lib.flox-floxpkgs.getRev self}";
-  src = self;
-  ld-floxlib = inputs.ld-floxlib.packages.ld-floxlib;
+# ---------------------------------------------------------------------------- #
 
-  splitSname = script: let
-    sname = baseNameOf script;
-    m     = builtins.match "([^_]*)_(.*).sh" sname;
-    bname = builtins.elemAt m 1;
-  in {
-    inherit sname bname;
-    priority = builtins.head m;
-    pname    = "profile-" + bname;
+  ldFloxlib = inputs.ld-floxlib.packages.ld-floxlib;
+  pname     = "etc-profiles";
+  version   = "0.1.0-${lib.flox-floxpkgs.getRev self}";
+  drv       = derivation {
+    inherit pname version system ldFloxlib;
+    name      = pname + "-" + version;
+    builder   = bash.outPath + "/bin/bash";
+    outputs   = ["common_paths" "node" "python3" "out"];
+    profile   = builtins.path { path = ( toString self ) + "/profile";   };
+    profile_d = builtins.path { path = ( toString self ) + "/profile.d"; };
+    PATH    = coreutils.outPath + "/bin";
+    args    = ["-eu" "-o" "pipefail" "-c" ''
+      mkdir -p "$out/etc"                     \
+               "$out/lib"                     \
+               "$common_paths/etc/profile.d"  \
+               "$node/etc/profile.d"          \
+               "$python3/etc/profile.d"       \
+      ;
+      cp -- "$profile" "$out/etc/profile";
+      ${if ! hostPlatform.isLinux then "" else ''
+          ln -s -- "$ldFloxlib/lib/"* "$out/lib/";
+        ''
+       }
+      cp -- "$profile_d/0100_common-paths.sh" "$common_paths/etc/profile.d/";
+      cp -- "$profile_d/0500_node.sh"         "$node/etc/profile.d/";
+      cp -- "$profile_d/0500_python3.sh"      "$python3/etc/profile.d/";
+    ''];
   };
 
-  base = import ./base.nix {
-    inherit self version bash coreutils hostPlatform ld-floxlib lib system;
-  };
 
-  mkEtcProfile = import ./mk-profile.nix {
-    inherit bash coreutils system;
-    version = base.version;
-  };
+# --------------------------------------------------------------------------- #
 
-  mkProfileLocal = {
-    script
-  , description     ? null
-  , longDescription ? null
-  , ...
-  } @ args: let
-    ss = splitSname script;
+in drv // {
+  meta = let
+    lfm     = ldFloxlib.meta or {};
+    license = lib.licenses.mit;
+    # Inherit broken from `ld-floxlib'
+    broken    = if hostPlatform.isLinux then ( lfm.broken or false ) else false;
+    platforms = [
+      "x86_64-linux"  "aarch64-linux"  "i686-linux"
+      "x86_64-darwin" "aarch64-darwin"
+    ];
+    unsupported = ! ( builtins.elem hostPlatform.system platforms );
+    unfree      = ! license.free;
   in {
-    name  = lib.replaceStrings ["-"] ["_"] ss.bname;
-    value = lib.makeOverridable mkEtcProfile (
-      ( removeAttrs ss ["bname"] ) // args
-    );
-  };
+    inherit (drv) name;
+    inherit license broken platforms unfree unsupported;
+    available = ( config.allowBroken            || ( ! broken      ) ) &&
+                ( config.allowUnfree            || ( ! unfree      ) ) &&
+                ( config.allowUnsupportedSystem || ( ! unsupported ) );
+    homepage         = "https://github.com/flox/etc-profiles";
+    outputsToInstall = ["common_paths" "python3" "node" "out"];
+    description      = ''
+      Installable /etc/profile.d activation scripts for use with flox
+    '';
+    longDescription = ''
+      An `<env>/etc/profile' script to source `<env>/etc/profile.d/*.sh`
 
-  profiles = builtins.listToAttrs ( map mkProfileLocal [
-    { script = src + "/profile.d/0100_common-paths.sh"; }
-    { script = src + "/profile.d/0500_node.sh"; }
-    { script = src + "/profile.d/0500_python3.sh"; }
-  ] );
+      Users can define and install scripts in `<env>/etc/profile.d' as
+      "custom packages"/installables to share common setup processes
+      across environments.
 
-  etcProfiles = buildEnv {
-    name    = pname + "-" + version;
-    paths = [ base ] ++ (builtins.attrValues profiles);
+      Recommended usage:
+        # flox.nix
+        {
+          packages.nixpkgs-flox.sqlite = {
+            meta.outputsToInstall = ["bin" "out" "dev"];
+          };
+
+          # Provides developer environment hooks for use with python3.
+          packages.flox.etc-profiles = {
+            # Optionally, specify language packages to install.
+            # Please note that all/most language packs depend on including
+            # the "common_paths" output, and ALL depend on "out".
+            meta.outputsToInstall = ["out" "common_paths" "python3"];
+          };
+
+          shell.hook = '${""}'
+            [[ -r "$FLOX_ENV/etc/profile" ]] && . "$FLOX_ENV/etc/profile";
+            pkg-config --list-all >&2;
+          '${""}'
+        }
+    '';
   };
+}
+
 
-in runCommand "etc-profiles.${version}" {
-  inherit pname version;
-  outputs = [ "out" "base" ] ++ (builtins.attrNames profiles);
-  meta.description = "Installable /etc/profile.d activation scripts for use with flox";
-} ''
-  cp -R -- ${etcProfiles}/. $out
-  cp -R -- ${base}/. $base
-  ${lib.concatStringsSep "\n" (lib.mapAttrsToList (output: outpath:
-    "cp -R -- ${outpath}/. \$${output}") profiles)}
-''
+# ---------------------------------------------------------------------------- #
+#
+#
+#
+# ============================================================================ #