diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 927b30ef36289..eb29620e3018d 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -2631,6 +2631,13 @@
     githubId = 718298;
     name = "Michael Livshin";
   };
+  CobaltCause = {
+    name = "Charles Hall";
+    email = "charles@computer.surgery";
+    github = "CobaltCause";
+    githubId = 7003738;
+    matrix = "@charles:computer.surgery";
+  };
   cobbal = {
     email = "andrew.cobb@gmail.com";
     github = "cobbal";
diff --git a/pkgs/development/tools/rust/cargo-llvm-cov/Cargo.lock b/pkgs/development/tools/rust/cargo-llvm-cov/Cargo.lock
new file mode 100644
index 0000000000000..b6cd4d84ebc4f
--- /dev/null
+++ b/pkgs/development/tools/rust/cargo-llvm-cov/Cargo.lock
@@ -0,0 +1,522 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
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+ "glob",
+ "home",
+ "is_executable",
+ "itertools",
+ "lexopt",
+ "once_cell",
+ "opener",
+ "regex",
+ "rustc-demangle",
+ "rustversion",
+ "serde",
+ "serde_json",
+ "shell-escape",
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+ "tempfile",
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+ "cfg-if",
+ "fastrand",
+ "libc",
+ "redox_syscall",
+ "remove_dir_all",
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+]
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+ "same-file",
+ "winapi",
+ "winapi-util",
+]
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+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
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+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
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+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/pkgs/development/tools/rust/cargo-llvm-cov/default.nix b/pkgs/development/tools/rust/cargo-llvm-cov/default.nix
new file mode 100644
index 0000000000000..7bf99f26d30eb
--- /dev/null
+++ b/pkgs/development/tools/rust/cargo-llvm-cov/default.nix
@@ -0,0 +1,49 @@
+{ lib
+, fetchFromGitHub
+, rustPlatform
+}:
+
+let
+  owner = "taiki-e";
+  repo = "cargo-llvm-cov";
+in
+
+rustPlatform.buildRustPackage rec {
+  pname = repo;
+  version = "0.5.0";
+
+  src = fetchFromGitHub {
+    inherit owner repo;
+    rev = "v${version}";
+    sha256 = "sha256-2O0MyL4SF/2AUpgWYUDWQ5dDpa84pwmnKGtAaWi5bwQ=";
+  };
+
+  cargoLock.lockFile = ./Cargo.lock;
+  postPatch = "cp ${./Cargo.lock} Cargo.lock";
+
+  # Skip tests that require `llvm-tools-preview` to be installed since it's not
+  # packaged in nixpkgs (yet?)
+  checkFlags = lib.concatStringsSep " " [
+    "--skip bin_crate"
+    "--skip cargo_config"
+    "--skip clean_ws"
+    "--skip instantiations"
+    "--skip merge"
+    "--skip merge_failure_mode_all"
+    "--skip no_test"
+    "--skip open_report"
+    "--skip real1"
+    "--skip show_env"
+    "--skip virtual1"
+  ];
+
+  meta = with lib; {
+    description = "Cargo subcommand to easily use LLVM source-based code coverage (-C instrument-coverage)";
+    longDescription = ''
+      In order for this to work, you need to have the `llvm-tools-preview` component installed. Generally, this is done through either `rustup` or a Nix library/flake.
+    '';
+    homepage = "https://github.com/${owner}/${repo}";
+    license = with licenses; [ asl20 /* or */ mit ];
+    maintainers = with maintainers; [ CobaltCause ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 857cfb9e6954c..1e330526c457e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -14868,6 +14868,7 @@ with pkgs;
   cargo-graph = callPackage ../development/tools/rust/cargo-graph { };
   cargo-hack = callPackage ../development/tools/rust/cargo-hack { };
   cargo-license = callPackage ../development/tools/rust/cargo-license { };
+  cargo-llvm-cov = callPackage ../development/tools/rust/cargo-llvm-cov { };
   cargo-llvm-lines = callPackage ../development/tools/rust/cargo-llvm-lines { };
   cargo-lock = callPackage ../development/tools/rust/cargo-lock { };
   cargo-outdated = callPackage ../development/tools/rust/cargo-outdated {