feat: add misc expressions

3 files changed, 30 insertions, 0 deletions

diff --git a/misc/README.md b/misc/README.md
new file mode 100644
index 0000000..df99a17
--- /dev/null
+++ b/misc/README.md
@@ -0,0 +1,3 @@
+# misc expressions
+
+these are standalone nix files for random things i do
diff --git a/misc/nixgc.nix b/misc/nixgc.nix
new file mode 100644
index 0000000..9b2b357
--- /dev/null
+++ b/misc/nixgc.nix
@@ -0,0 +1,11 @@
+# this is a shell script that uses the new nix cli to emulate
+# nix-collect-garbage
+with (import (builtins.getFlake "nixpkgs") {});
+  writeScriptBin "nixgc" ''
+    #!${fish}/bin/fish
+    set -l profiles (find /nix/var/nix/profiles/ -maxdepth 3 -type l -not -name '*-link')
+
+    for profile in $profiles
+    	sudo nix profile wipe-history --profile $profile
+    end
+  ''
diff --git a/misc/tcmalloc-monster.nix b/misc/tcmalloc-monster.nix
new file mode 100644
index 0000000..1d5f51c
--- /dev/null
+++ b/misc/tcmalloc-monster.nix
@@ -0,0 +1,16 @@
+# this uses a cherry-picked version of nixpkgs with llvm 16
+# to build a 32-bit, statically linked version of tcmalloc
+#
+# i'm using it to test ways to solve crashes in tf2 on
+# systems with mesa also compiled against llvm 16
+let
+  commit = "2c627d9c702202d75746fd45045d20008bf7ed86";
+  nixpkgs = import (builtins.fetchTarball {
+    url = "https://github.com/RaitoBezarius/nixpkgs/archive/${commit}.tar.gz";
+    sha256 = "sha256:002sz5nqsr7nvwp6bdapwmb691snhrcwdlp4flbhwgqgfzzpyksc";
+  }) {system = "x86_64-linux";};
+
+  inherit (nixpkgs.llvmPackages_16) stdenv;
+  inherit (nixpkgs.pkgsi686Linux.pkgsStatic) gperftools;
+in
+  gperftools.override {inherit stdenv;}