diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4cd07d7..ada0483 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -65,31 +65,49 @@ jobs:
     runs-on: ubuntu-22.04
     needs: build-x86_64-linux
     steps:
+      - run: sudo apt install fish zsh
       - uses: actions/download-artifact@v3
         with:
           name: harmonic-x86_64-linux
       - name: Set executable
         run: chmod +x ./harmonic
-
       - name: Initial install
-        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install linux-multi --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
+        run: sudo GITHUB_PATH=$GITHUB_PATH RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install linux-multi --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
       - name: Initial uninstall (without a `nix run` first)
-        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full /nix/harmonic uninstall --no-confirm
-
+        run: sudo GITHUB_PATH=$GITHUB_PATH RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
       - name: Repeated install
-        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install linux-multi --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
+        run: sudo GITHUB_PATH=$GITHUB_PATH RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install linux-multi --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
+      - name: echo $PATH
+        run: echo $PATH
       - name: Test `nix`
-        run: |
-          . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
-          nix run nixpkgs#fortune
+        if: success() || failure()
+        run: nix run nixpkgs#fortune
+      - name: Test bash
+        run: nix-instantiate -E 'builtins.currentTime' --eval
+        if: success() || failure()
+        shell: bash --login {0}
+      - name: Test sh
+        run: nix-instantiate -E 'builtins.currentTime' --eval
+        if: success() || failure()
+        shell: sh -l {0}
+      - name: Test zsh
+        run: nix-instantiate -E 'builtins.currentTime' --eval
+        if: success() || failure()
+        shell: zsh --login --interactive {0}
+      ## Broken until https://github.com/NixOS/nix/pull/7105 is released due to the version on Ubuntu's runners
+      # - name: Test fish
+      #   run: nix-instantiate -E 'builtins.currentTime' --eval
+      #   if: success() || failure()
+      #   shell: fish --login {0}
       - name: Repeated uninstall
-        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full /nix/harmonic uninstall --no-confirm
+        run: sudo GITHUB_PATH=$GITHUB_PATH RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
 
   run-steam-deck:
     name: Run Steam Deck (mock)
     runs-on: ubuntu-22.04
     needs: build-x86_64-linux
     steps:
+      - run: sudo apt install fish zsh
       - uses: actions/download-artifact@v3
         with:
           name: harmonic-x86_64-linux
@@ -101,24 +119,40 @@ jobs:
           echo -e "#! /bin/sh\nexit 0" | sudo tee -a /bin/steamos-readonly
           sudo chmod +x /bin/steamos-readonly
           sudo useradd -m deck
-
       - name: Initial install
-        run: sudo PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install steam-deck --persistence `pwd`/ci-test-nix --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
+        run: sudo GITHUB_PATH=$GITHUB_PATH PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install steam-deck --persistence `pwd`/ci-test-nix --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
       - name: Initial uninstall (without a `nix run` first)
         run: |
           cp /nix/harmonic ./harmonic # Since /nix is a mount we must avoid requiring it to remain existing
-          sudo PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
-
+          sudo GITHUB_PATH=$GITHUB_PATH PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
       - name: Repeated install
-        run: sudo PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install steam-deck --persistence `pwd`/ci-test-nix --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
+        run: sudo GITHUB_PATH=$GITHUB_PATH PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install steam-deck --persistence `pwd`/ci-test-nix --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
+      - name: echo $PATH
+        run: echo $PATH
       - name: Test `nix`
-        run: |
-          . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
-          nix run nixpkgs#fortune
+        if: success() || failure()
+        run: nix run nixpkgs#fortune
+      - name: Test bash
+        run: nix-instantiate -E 'builtins.currentTime' --eval
+        if: success() || failure()
+        shell: bash --login {0}
+      - name: Test sh
+        run: nix-instantiate -E 'builtins.currentTime' --eval
+        if: success() || failure()
+        shell: sh -l {0}
+      - name: Test zsh
+        run: nix-instantiate -E 'builtins.currentTime' --eval
+        if: success() || failure()
+        shell: zsh --login --interactive {0}
+      ## Broken until https://github.com/NixOS/nix/pull/7105 is released due to the version on Ubuntu's runners
+      # - name: Test fish
+      #   run: nix-instantiate -E 'builtins.currentTime' --eval
+      #   if: success() || failure()
+      #   shell: fish --login {0}
       - name: Repeated uninstall
         run: |
           cp /nix/harmonic ./harmonic # Since /nix is a mount we must avoid requiring it to remain existing
-          sudo PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full /nix/harmonic uninstall --no-confirm
+          sudo GITHUB_PATH=$GITHUB_PATH PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
 
   build-x86_64-darwin:
     name: Build x86_64 Darwin
@@ -144,27 +178,43 @@ jobs:
     runs-on: macos-12
     needs: build-x86_64-darwin
     steps:
+      - run: brew install fish
       - uses: actions/download-artifact@v3
         with:
           name: harmonic-x86_64-darwin
       - name: Set executable
         run: chmod +x ./harmonic
-
       - name: Initial install
-        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install darwin-multi --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
+        run: sudo GITHUB_PATH=$GITHUB_PATH RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install darwin-multi --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
       - name: Initial uninstall (without a `nix run` first)
         run: |
           cp /nix/harmonic ./harmonic # Since /nix is a mount we must avoid requiring it to remain existing
-          sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
-        
+          sudo GITHUB_PATH=$GITHUB_PATH RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
       - name: Repeated install
-        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install darwin-multi --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
+        run: sudo GITHUB_PATH=$GITHUB_PATH RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic install darwin-multi --extra-conf "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" --no-confirm
+      - name: echo $PATH
+        run: echo $PATH
       - name: Test `nix`
-        run: |
-          . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
-          nix run nixpkgs#fortune
+        if: success() || failure()
+        run: nix run nixpkgs#fortune
+      - name: Test bash
+        run: nix-instantiate -E 'builtins.currentTime' --eval
+        if: success() || failure()
+        shell: bash --login {0}
+      - name: Test sh
+        run: nix-instantiate -E 'builtins.currentTime' --eval
+        if: success() || failure()
+        shell: sh -l {0}
+      - name: Test zsh
+        run: nix-instantiate -E 'builtins.currentTime' --eval
+        if: success() || failure()
+        shell: zsh --login --interactive {0}
+      - name: Test fish
+        run: nix-instantiate -E 'builtins.currentTime' --eval
+        if: success() || failure()
+        shell: fish --login {0}
       - name: Repeated uninstall
         run: |
           cp /nix/harmonic ./harmonic # Since /nix is a mount we must avoid requiring it to remain existing
-          sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
+          sudo GITHUB_PATH=$GITHUB_PATH RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
         
\ No newline at end of file
diff --git a/src/action/common/configure_shell_profile.rs b/src/action/common/configure_shell_profile.rs
index a4909c9..692b35f 100644
--- a/src/action/common/configure_shell_profile.rs
+++ b/src/action/common/configure_shell_profile.rs
@@ -1,24 +1,40 @@
-use crate::action::base::CreateOrAppendFile;
+use crate::action::base::{CreateDirectory, CreateOrAppendFile};
 use crate::action::{Action, ActionDescription, ActionError, StatefulAction};
 
-use std::path::Path;
+use nix::unistd::User;
+use std::path::{Path, PathBuf};
 use tokio::task::JoinSet;
 
+// Fish has different syntax than zsh/bash, treat it separate
+const PROFILE_FISH_SUFFIX: &str = "conf.d/nix.fish";
+
+/**
+ Each of these are common values of $__fish_sysconf_dir,
+under which Fish will look for a file named
+[`PROFILE_FISH_SUFFIX`].
+*/
+const PROFILE_FISH_PREFIXES: &[&str] = &[
+    "/etc/fish",              // standard
+    "/usr/local/etc/fish",    // their installer .pkg for macOS
+    "/opt/homebrew/etc/fish", // homebrew
+    "/opt/local/etc/fish",    // macports
+];
 const PROFILE_TARGETS: &[&str] = &[
     "/etc/bashrc",
     "/etc/profile.d/nix.sh",
     "/etc/zshrc",
     "/etc/bash.bashrc",
     "/etc/zsh/zshrc",
-    // TODO(@hoverbear): FIsh
 ];
-const PROFILE_NIX_FILE: &str = "/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh";
+const PROFILE_NIX_FILE_SHELL: &str = "/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh";
+const PROFILE_NIX_FILE_FISH: &str = "/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.fish";
 
 /**
 Configure any detected shell profiles to include Nix support
  */
 #[derive(Debug, serde::Deserialize, serde::Serialize, Clone)]
 pub struct ConfigureShellProfile {
+    create_directories: Vec<StatefulAction<CreateDirectory>>,
     create_or_append_files: Vec<StatefulAction<CreateOrAppendFile>>,
 }
 
@@ -26,26 +42,92 @@ impl ConfigureShellProfile {
     #[tracing::instrument(skip_all)]
     pub async fn plan() -> Result<StatefulAction<Self>, ActionError> {
         let mut create_or_append_files = Vec::default();
+        let mut create_directories = Vec::default();
+
+        let shell_buf = format!(
+            "\n\
+            # Nix\n\
+            if [ -e '{PROFILE_NIX_FILE_SHELL}' ]; then\n\
+            {inde}. '{PROFILE_NIX_FILE_SHELL}'\n\
+            fi\n\
+            # End Nix\n
+        \n",
+            inde = "    ", // indent
+        );
+
         for profile_target in PROFILE_TARGETS {
-            let path = Path::new(profile_target);
-            if !path.exists() {
-                tracing::trace!("Did not plan to edit `{profile_target}` as it does not exist.");
+            let profile_target_path = Path::new(profile_target);
+            if let Some(parent) = profile_target_path.parent() {
+                if !parent.exists() {
+                    tracing::trace!(
+                        "Did not plan to edit `{profile_target}` as it's parent folder does not exist."
+                    );
+                    continue;
+                }
+                create_or_append_files.push(
+                    CreateOrAppendFile::plan(
+                        profile_target_path,
+                        None,
+                        None,
+                        0o0755,
+                        shell_buf.to_string(),
+                    )
+                    .await?,
+                );
+            }
+        }
+
+        let fish_buf = format!(
+            "\n\
+            # Nix\n\
+            if test -e '{PROFILE_NIX_FILE_FISH}'\n\
+            {inde}. '{PROFILE_NIX_FILE_FISH}'\n\
+            end\n\
+            # End Nix\n\
+        \n",
+            inde = "    ", // indent
+        );
+
+        for fish_prefix in PROFILE_FISH_PREFIXES {
+            let fish_prefix_path = PathBuf::from(fish_prefix);
+
+            if !fish_prefix_path.exists() {
+                // If the prefix doesn't exist, don't create the `conf.d/nix.fish`
                 continue;
             }
-            let buf = format!(
-                "\n\
-                # Nix\n\
-                if [ -e '{PROFILE_NIX_FILE}' ]; then\n\
-                . '{PROFILE_NIX_FILE}'\n\
-                fi\n\
-                # End Nix\n
-            \n",
+
+            let mut profile_target = fish_prefix_path;
+            profile_target.push(PROFILE_FISH_SUFFIX);
+
+            if let Some(conf_d) = profile_target.parent() {
+                create_directories.push(
+                    CreateDirectory::plan(conf_d.to_path_buf(), None, None, 0o0644, false).await?,
+                );
+            }
+
+            create_or_append_files.push(
+                CreateOrAppendFile::plan(profile_target, None, None, 0o0755, fish_buf.to_string())
+                    .await?,
             );
+        }
+
+        // If the `$GITHUB_PATH` environment exists, we're almost certainly running on Github
+        // Actions, and almost certainly wants the relevant `$PATH` additions added.
+        if let Ok(github_path) = std::env::var("GITHUB_PATH") {
+            let mut buf = "/nix/var/nix/profiles/default/bin\n".to_string();
+            // Actions runners operate as `runner` user by default
+            if let Ok(Some(runner)) = User::from_name("runner") {
+                buf += &format!(
+                    "/nix/var/nix/profiles/per-user/{}/profile/bin\n",
+                    runner.uid
+                );
+            }
             create_or_append_files
-                .push(CreateOrAppendFile::plan(path, None, None, 0o0644, buf).await?);
+                .push(CreateOrAppendFile::plan(&github_path, None, None, None, buf).await?)
         }
 
         Ok(Self {
+            create_directories,
             create_or_append_files,
         }
         .into())
@@ -70,14 +152,21 @@ impl Action for ConfigureShellProfile {
     async fn execute(&mut self) -> Result<(), ActionError> {
         let Self {
             create_or_append_files,
+            create_directories,
         } = self;
 
+        for create_directory in create_directories {
+            create_directory.try_execute().await?;
+        }
+
         let mut set = JoinSet::new();
         let mut errors = Vec::default();
 
         for (idx, create_or_append_file) in create_or_append_files.iter().enumerate() {
+            let span = tracing::Span::current().clone();
             let mut create_or_append_file_clone = create_or_append_file.clone();
             let _abort_handle = set.spawn(async move {
+                let _ = span.enter();
                 create_or_append_file_clone.try_execute().await?;
                 Result::<_, ActionError>::Ok((idx, create_or_append_file_clone))
             });
@@ -114,6 +203,7 @@ impl Action for ConfigureShellProfile {
     #[tracing::instrument(skip_all)]
     async fn revert(&mut self) -> Result<(), ActionError> {
         let Self {
+            create_directories,
             create_or_append_files,
         } = self;
 
@@ -138,6 +228,10 @@ impl Action for ConfigureShellProfile {
             };
         }
 
+        for create_directory in create_directories {
+            create_directory.try_revert().await?;
+        }
+
         if !errors.is_empty() {
             if errors.len() == 1 {
                 return Err(errors.into_iter().next().unwrap().into());
diff --git a/src/action/mod.rs b/src/action/mod.rs
index 1187653..d16f25c 100644
--- a/src/action/mod.rs
+++ b/src/action/mod.rs
@@ -23,12 +23,11 @@ arguments. For example, several 'composite' actions accept a [`CommonSettings`](
 You can manually plan, execute, then revert an [`Action`] like so:
 
 ```rust,no_run
-# async fn wrapper() -> Result<(), harmonic::HarmonicError> {
+# async fn wrapper() {
 use harmonic::action::base::CreateDirectory;
-let mut action = CreateDirectory::plan("/nix", None, None, 0o0755, true).await?;
-action.try_execute().await?;
-action.try_revert().await?;
-#   Ok(())
+let mut action = CreateDirectory::plan("/nix", None, None, 0o0755, true).await.unwrap();
+action.try_execute().await.unwrap();
+action.try_revert().await.unwrap();
 # }
 ```
 
diff --git a/src/settings.rs b/src/settings.rs
index 9dd2b9a..af08a12 100644
--- a/src/settings.rs
+++ b/src/settings.rs
@@ -10,16 +10,16 @@ use crate::channel_value::ChannelValue;
 
 /// Default [`nix_package_url`](CommonSettings::nix_package_url) for Linux x86_64
 pub const NIX_X64_64_LINUX_URL: &str =
-    "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-linux.tar.xz";
+    "https://releases.nixos.org/nix/nix-2.11.1/nix-2.11.1-x86_64-linux.tar.xz";
 /// Default [`nix_package_url`](CommonSettings::nix_package_url) for Linux aarch64
 pub const NIX_AARCH64_LINUX_URL: &str =
-    "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-aarch64-linux.tar.xz";
+    "https://releases.nixos.org/nix/nix-2.11.1/nix-2.11.1-aarch64-linux.tar.xz";
 /// Default [`nix_package_url`](CommonSettings::nix_package_url) for Darwin x86_64
 pub const NIX_X64_64_DARWIN_URL: &str =
-    "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-darwin.tar.xz";
+    "https://releases.nixos.org/nix/nix-2.11.1/nix-2.11.1-x86_64-darwin.tar.xz";
 /// Default [`nix_package_url`](CommonSettings::nix_package_url) for Darwin aarch64
 pub const NIX_AARCH64_DARWIN_URL: &str =
-    "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-aarch64-darwin.tar.xz";
+    "https://releases.nixos.org/nix/nix-2.11.1/nix-2.11.1-aarch64-darwin.tar.xz";
 
 /** Common settings used by all [`BuiltinPlanner`](crate::planner::BuiltinPlanner)s
 
diff --git a/tests/fixtures/darwin/darwin-multi.json b/tests/fixtures/darwin/darwin-multi.json
index 64875b7..39a07b4 100644
--- a/tests/fixtures/darwin/darwin-multi.json
+++ b/tests/fixtures/darwin/darwin-multi.json
@@ -85,7 +85,7 @@
                 "action": "provision_nix",
                 "fetch_nix": {
                     "action": {
-                        "url": "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-darwin.tar.xz",
+                        "url": "https://releases.nixos.org/nix/nix-2.11.1/nix-2.11.1-x86_64-darwin.tar.xz",
                         "dest": "/nix/temp-install-dir"
                     },
                     "state": "Uncompleted"
@@ -556,14 +556,15 @@
                 },
                 "configure_shell_profile": {
                     "action": {
+                        "create_directories": [],
                         "create_or_append_files": [
                             {
                                 "action": {
                                     "path": "/etc/bashrc",
                                     "user": null,
                                     "group": null,
-                                    "mode": 420,
-                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n. '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n            \n"
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
                                 },
                                 "state": "Uncompleted"
                             },
@@ -572,8 +573,18 @@
                                     "path": "/etc/zshrc",
                                     "user": null,
                                     "group": null,
-                                    "mode": 420,
-                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n. '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n            \n"
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
+                                },
+                                "state": "Uncompleted"
+                            },
+                            {
+                                "action": {
+                                    "path": "/etc/bash.bashrc",
+                                    "user": null,
+                                    "group": null,
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
                                 },
                                 "state": "Uncompleted"
                             }
@@ -659,7 +670,7 @@
             "nix_build_group_id": 3000,
             "nix_build_user_prefix": "_nixbld",
             "nix_build_user_id_base": 300,
-            "nix_package_url": "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-darwin.tar.xz",
+            "nix_package_url": "https://releases.nixos.org/nix/nix-2.11.1/nix-2.11.1-x86_64-darwin.tar.xz",
             "extra_conf": [],
             "force": false
         },
diff --git a/tests/fixtures/linux/linux-multi.json b/tests/fixtures/linux/linux-multi.json
index 82f08d8..6f11708 100644
--- a/tests/fixtures/linux/linux-multi.json
+++ b/tests/fixtures/linux/linux-multi.json
@@ -17,7 +17,7 @@
                 "action": "provision_nix",
                 "fetch_nix": {
                     "action": {
-                        "url": "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-linux.tar.xz",
+                        "url": "https://releases.nixos.org/nix/nix-2.11.1/nix-2.11.1-x86_64-linux.tar.xz",
                         "dest": "/nix/temp-install-dir"
                     },
                     "state": "Uncompleted"
@@ -488,14 +488,45 @@
                 },
                 "configure_shell_profile": {
                     "action": {
+                        "create_directories": [],
                         "create_or_append_files": [
+                            {
+                                "action": {
+                                    "path": "/etc/bashrc",
+                                    "user": null,
+                                    "group": null,
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
+                                },
+                                "state": "Uncompleted"
+                            },
+                            {
+                                "action": {
+                                    "path": "/etc/profile.d/nix.sh",
+                                    "user": null,
+                                    "group": null,
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
+                                },
+                                "state": "Uncompleted"
+                            },
+                            {
+                                "action": {
+                                    "path": "/etc/zshrc",
+                                    "user": null,
+                                    "group": null,
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
+                                },
+                                "state": "Uncompleted"
+                            },
                             {
                                 "action": {
                                     "path": "/etc/bash.bashrc",
                                     "user": null,
                                     "group": null,
-                                    "mode": 420,
-                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n. '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n            \n"
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
                                 },
                                 "state": "Uncompleted"
                             }
@@ -581,7 +612,7 @@
             "nix_build_group_id": 3000,
             "nix_build_user_prefix": "nixbld",
             "nix_build_user_id_base": 3000,
-            "nix_package_url": "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-linux.tar.xz",
+            "nix_package_url": "https://releases.nixos.org/nix/nix-2.11.1/nix-2.11.1-x86_64-linux.tar.xz",
             "extra_conf": [],
             "force": false
         }
diff --git a/tests/fixtures/linux/steam-deck.json b/tests/fixtures/linux/steam-deck.json
index e3198ba..db94592 100644
--- a/tests/fixtures/linux/steam-deck.json
+++ b/tests/fixtures/linux/steam-deck.json
@@ -60,7 +60,7 @@
                 "action": "provision_nix",
                 "fetch_nix": {
                     "action": {
-                        "url": "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-linux.tar.xz",
+                        "url": "https://releases.nixos.org/nix/nix-2.11.1/nix-2.11.1-x86_64-linux.tar.xz",
                         "dest": "/nix/temp-install-dir"
                     },
                     "state": "Uncompleted"
@@ -531,14 +531,45 @@
                 },
                 "configure_shell_profile": {
                     "action": {
+                        "create_directories": [],
                         "create_or_append_files": [
+                            {
+                                "action": {
+                                    "path": "/etc/bashrc",
+                                    "user": null,
+                                    "group": null,
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
+                                },
+                                "state": "Uncompleted"
+                            },
+                            {
+                                "action": {
+                                    "path": "/etc/profile.d/nix.sh",
+                                    "user": null,
+                                    "group": null,
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
+                                },
+                                "state": "Uncompleted"
+                            },
+                            {
+                                "action": {
+                                    "path": "/etc/zshrc",
+                                    "user": null,
+                                    "group": null,
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
+                                },
+                                "state": "Uncompleted"
+                            },
                             {
                                 "action": {
                                     "path": "/etc/bash.bashrc",
                                     "user": null,
                                     "group": null,
-                                    "mode": 420,
-                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n. '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n            \n"
+                                    "mode": 493,
+                                    "buf": "\n# Nix\nif [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then\n    . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'\nfi\n# End Nix\n\n        \n"
                                 },
                                 "state": "Uncompleted"
                             }
@@ -625,7 +656,7 @@
             "nix_build_group_id": 3000,
             "nix_build_user_prefix": "nixbld",
             "nix_build_user_id_base": 3000,
-            "nix_package_url": "https://releases.nixos.org/nix/nix-2.11.0/nix-2.11.0-x86_64-linux.tar.xz",
+            "nix_package_url": "https://releases.nixos.org/nix/nix-2.11.1/nix-2.11.1-x86_64-linux.tar.xz",
             "extra_conf": [],
             "force": false
         }
diff --git a/tests/plan.rs b/tests/plan.rs
index 30e87d0..9c2b6df 100644
--- a/tests/plan.rs
+++ b/tests/plan.rs
@@ -5,7 +5,7 @@ const STEAM_DECK: &str = include_str!("./fixtures/linux/steam-deck.json");
 const DARWIN_MULTI: &str = include_str!("./fixtures/darwin/darwin-multi.json");
 
 // Ensure existing plans still parse
-// If this breaks and you need to update the fixture, it's time to raise version.
+// If this breaks and you need to update the fixture, disable these tests, bump harmonic to a new version, and update the plans.
 #[test]
 fn plan_compat_linux_multi() -> eyre::Result<()> {
     let _: InstallPlan = serde_json::from_str(LINUX_MULTI)?;
@@ -13,7 +13,7 @@ fn plan_compat_linux_multi() -> eyre::Result<()> {
 }
 
 // Ensure existing plans still parse
-// If this breaks and you need to update the fixture, it's time to raise version.
+// If this breaks and you need to update the fixture, disable these tests, bump harmonic to a new version, and update the plans.
 #[test]
 fn plan_compat_steam_deck() -> eyre::Result<()> {
     let _: InstallPlan = serde_json::from_str(STEAM_DECK)?;
@@ -21,7 +21,7 @@ fn plan_compat_steam_deck() -> eyre::Result<()> {
 }
 
 // Ensure existing plans still parse
-// If this breaks and you need to update the fixture, it's time to raise version.
+// If this breaks and you need to update the fixture, disable these tests, bump harmonic to a new version, and update the plans.
 #[test]
 fn plan_compat_darwin_multi() -> eyre::Result<()> {
     let _: InstallPlan = serde_json::from_str(DARWIN_MULTI)?;