From 7f009cfd0880d41532f7c6e41e0cbbccb779c21b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kier=C3=A1n=20Meinhardt?= <kmein@posteo.de>
Date: Tue, 27 Apr 2021 21:56:44 +0200
Subject: [PATCH] feat: menu-calc (also for i3), nix-index

---
 configs/i3.nix               |  1 +
 configs/packages/default.nix |  6 ++++++
 packages/scripts/default.nix | 29 +++++++++++++++++++++++++++++
 3 files changed, 36 insertions(+)

diff --git a/configs/i3.nix b/configs/i3.nix
index 41b79e6..cee291e 100644
--- a/configs/i3.nix
+++ b/configs/i3.nix
@@ -193,6 +193,7 @@ in {
         "${modifier}+Return" = "exec ${(defaultApplications pkgs).terminal}";
         "${modifier}+t" = "exec ${(defaultApplications pkgs).fileManager}";
         "${modifier}+y" = "exec ${(defaultApplications pkgs).browser}";
+        "${modifier}+0" = "exec ${pkgs.scripts.menu-calc}/bin/=";
 
         "${modifier}+Shift+w" = "exec ${pkgs.scripts.k-lock}/bin/k-lock";
         "${modifier}+a" =
diff --git a/configs/packages/default.nix b/configs/packages/default.nix
index 98101c9..8178d0a 100644
--- a/configs/packages/default.nix
+++ b/configs/packages/default.nix
@@ -111,6 +111,7 @@ in {
     hc # print files as qr codes
     youtubeDL
     bc # calculator
+    pari # gp -- better calculator
     scripts.infschmv
     scripts.default-gateway
     scripts.showkeys-toggle
@@ -149,6 +150,8 @@ in {
     # kmein.slide
     scripts.tolino-screensaver
     scripts.rfc
+    scripts.tag
+    scripts.menu-calc
     nix-prefetch-git
     scripts.nix-git
     nixfmt
@@ -165,6 +168,9 @@ in {
     spotify
     spotify-tui
     playerctl
+
+    nix-index
+    scripts.nix-index-update
   ];
 
 }
diff --git a/packages/scripts/default.nix b/packages/scripts/default.nix
index 3370352..4864fb7 100644
--- a/packages/scripts/default.nix
+++ b/packages/scripts/default.nix
@@ -327,4 +327,33 @@ in rec {
   bvg = pkgs.callPackage ./bvg.nix { };
   nav = pkgs.callPackage ./nav.nix { };
   k-lock = pkgs.callPackage ./k-lock.nix { };
+
+  menu-calc = pkgs.writers.writeDashBin "=" ''
+    # https://github.com/onespaceman/menu-calc
+
+    answer=$(echo "$@" | ${pkgs.pari}/bin/gp -q | ${pkgs.gnused}/bin/sed '/\./ s/\.\{0,1\}0\{1,\}$//')
+
+    action=$(printf "copy\nclear" | ${pkgs.dmenu}/bin/dmenu -p "= $answer")
+
+    case $action in
+      "clear") $0 ;;
+      "copy") printf %s "$answer" | ${pkgs.xclip}/bin/xclip -selection clipboard;;
+      "") ;;
+      *) $0 "$answer $action" ;;
+    esac
+  '';
+
+  nix-index-update = pkgs.writers.writeDashBin "nix-index-update" ''
+    mkdir -p $HOME/.cache/nix-index
+    tag=$(git -c 'versionsort.suffix=-' \
+      ls-remote \
+      --exit-code \
+      --refs \
+      --tags \
+      --sort='v:refname' \
+      https://github.com/Mic92/nix-index-database \
+      | awk 'END {match($2, /([^/]+)$/, m); print m[0]}')
+    curl -L "https://github.com/Mic92/nix-index-database/releases/download/$tag/files" -o $XDG_RUNTIME_DIR/files-$tag
+    mv $XDG_RUNTIME_DIR/files-$tag $HOME/.cache/nix-index/files
+  '';
 }