Harmonic stores itself during install (#94)

* Harmonic stores itself during install

* Use provisioned harmonic to do uninstall in CI

* Steam deck is a special case

* Fix mac hanging

.github/workflows/ci.yml

@@ -74,7 +74,7 @@ jobs:
       - 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
       - name: Initial uninstall (without a `nix run` first)
-        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
+        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full /nix/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
@@ -83,7 +83,7 @@ jobs:
           . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
           nix run nixpkgs#fortune
       - name: Repeated uninstall
-        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
+        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full /nix/harmonic uninstall --no-confirm
 
   run-steam-deck:
     name: Run Steam Deck (mock)
@@ -105,7 +105,9 @@ jobs:
       - 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=${{ secrets.GITHUB_TOKEN }}" --no-confirm
       - name: Initial uninstall (without a `nix run` first)
-        run: sudo PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
+        run: |
+          cp /nix/harmonic ./harmonic # Since /nix is a mount we must avoid requiring it to remain existing
+          sudo PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
 
       - 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=${{ secrets.GITHUB_TOKEN }}" --no-confirm
@@ -114,7 +116,9 @@ jobs:
           . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
           nix run nixpkgs#fortune
       - name: Repeated uninstall
-        run: sudo PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
+        run: |
+          cp /nix/harmonic ./harmonic # Since /nix is a mount we must avoid requiring it to remain existing
+          sudo PATH=$PATH:$HOME/bin RUST_LOG=harmonic=trace RUST_BACKTRACE=full /nix/harmonic uninstall --no-confirm
 
   build-x86_64-darwin:
     name: Build x86_64 Darwin
@@ -149,7 +153,9 @@ jobs:
       - 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
       - name: Initial uninstall (without a `nix run` first)
-        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
+        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
         
       - 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
@@ -158,5 +164,7 @@ jobs:
           . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
           nix run nixpkgs#fortune
       - name: Repeated uninstall
-        run: sudo RUST_LOG=harmonic=trace RUST_BACKTRACE=full ./harmonic uninstall --no-confirm
+        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
         

src/error.rs

@@ -15,6 +15,13 @@ pub enum HarmonicError {
     /// An error while writing the [`InstallPlan`](crate::InstallPlan)
     #[error("Recording install receipt")]
     RecordingReceipt(PathBuf, #[source] std::io::Error),
+    /// An error while writing copying the binary into the `/nix` folder
+    #[error("Copying `harmonic` binary into `/nix`")]
+    CopyingSelf(
+        #[source]
+        #[from]
+        std::io::Error,
+    ),
     /// An error while serializing the [`InstallPlan`](crate::InstallPlan)
     #[error("Serializing receipt")]
     SerializingReceipt(

src/plan.rs

@@ -143,6 +143,9 @@ impl InstallPlan {
         }
 
         write_receipt(self.clone()).await?;
+        copy_self_to_nix_store()
+            .await
+            .map_err(|e| HarmonicError::CopyingSelf(e))?;
         Ok(())
     }
 
@@ -283,6 +286,13 @@ fn ensure_version<'de, D: Deserializer<'de>>(d: D) -> Result<Version, D::Error>
     }
 }
 
+#[tracing::instrument]
+async fn copy_self_to_nix_store() -> Result<(), std::io::Error> {
+    let path = std::env::current_exe()?;
+    tokio::fs::copy(path, "/nix/harmonic").await?;
+    Ok(())
+}
+
 #[cfg(test)]
 mod test {
     use semver::Version;