From 32f4cb5cbba313b7af2fce46139c04d9469cb72a Mon Sep 17 00:00:00 2001
From: Kleidi Bujari <mail@4kb.net>
Date: Fri, 24 Jan 2025 12:14:23 -0500
Subject: 25-jan sprint

---
 mod/tools/perf-flamegraph.nix | 12 ++++++++++++
 mod/tools/typst/default.nix   |  2 +-
 2 files changed, 13 insertions(+), 1 deletion(-)
 create mode 100644 mod/tools/perf-flamegraph.nix

(limited to 'mod/tools')

diff --git a/mod/tools/perf-flamegraph.nix b/mod/tools/perf-flamegraph.nix
new file mode 100644
index 0000000..b472b74
--- /dev/null
+++ b/mod/tools/perf-flamegraph.nix
@@ -0,0 +1,12 @@
+# Script that collects perf timing for the execution of a command and writes a
+# flamegraph to stdout
+{ pkgs, ... }:
+
+pkgs.writeShellScriptBin "perf-flamegraph" ''
+  set -euo pipefail
+
+  ${pkgs.linuxPackages.perf}/bin/perf record -g --call-graph dwarf -F max "$@"
+  ${pkgs.linuxPackages.perf}/bin/perf script \
+    | ${pkgs.flamegraph}/bin/stackcollapse-perf.pl \
+    | ${pkgs.flamegraph}/bin/flamegraph.pl
+''
diff --git a/mod/tools/typst/default.nix b/mod/tools/typst/default.nix
index 3f81658..5f809d6 100644
--- a/mod/tools/typst/default.nix
+++ b/mod/tools/typst/default.nix
@@ -28,6 +28,6 @@ in
       depotPackages
     ];
 
-    shellHook = "export XDG_DATA_HOME=${depotPackages}/share:$XDG_DATA_HOME";
+    shellHook = "alias typst='export XDG_DATA_HOME=${depotPackages}/share:$XDG_DATA_HOME'";
   };
 }
-- 
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