remove bloated dependency sqlx, switch to libsqlite3-sys

sqlx is way to large for this utility and also async,
which we currently do not use

Cargo.toml

@@ -10,5 +10,4 @@ yansi = "1.0.1"
 thiserror = "2.0.12"
 log = "0.4.20"
 env_logger = "0.11.3"
-sqlx = { version = "0.8.5", features = ["runtime-async-std", "sqlite"] }
-async-std = "1.13.1"
+rusqlite = { version = "0.35.0", features = ["bundled"] }

config.toml

@@ -1,2 +0,0 @@
-[env]
-DATABASE_URL="sqlite:///nix/var/nix/db/db.sqlite"

src/error.rs

@@ -0,0 +1,134 @@
+use thiserror::Error;
+
+/// Application errors with thiserror
+#[derive(Debug, Error)]
+pub enum AppError {
+    #[error("Command failed: {command} {args:?} - {message}")]
+    CommandFailed {
+        command: String,
+        args: Vec<String>,
+        message: String,
+    },
+
+    #[error("Failed to decode command output from {context}: {source}")]
+    CommandOutputError {
+        source: std::str::Utf8Error,
+        context: String,
+    },
+
+    #[error("Failed to parse data in {context}: {message}")]
+    ParseError {
+        message: String,
+        context: String,
+        #[source]
+        source: Option<Box<dyn std::error::Error + Send + Sync>>,
+    },
+
+    #[error("Regex error in {context}: {source}")]
+    RegexError {
+        source: regex::Error,
+        context: String,
+    },
+
+    #[error("IO error in {context}: {source}")]
+    IoError {
+        source: std::io::Error,
+        context: String,
+    },
+
+    #[error("Database error: {source}")]
+    DatabaseError { source: rusqlite::Error },
+
+    #[error("Nix store error: {message} for path: {store_path}")]
+    NixStoreError { message: String, store_path: String },
+}
+
+// Implement From traits to support the ? operator
+impl From<std::io::Error> for AppError {
+    fn from(source: std::io::Error) -> Self {
+        Self::IoError {
+            source,
+            context: "unknown context".into(),
+        }
+    }
+}
+
+impl From<std::str::Utf8Error> for AppError {
+    fn from(source: std::str::Utf8Error) -> Self {
+        Self::CommandOutputError {
+            source,
+            context: "command output".into(),
+        }
+    }
+}
+
+impl From<rusqlite::Error> for AppError {
+    fn from(source: rusqlite::Error) -> Self {
+        Self::DatabaseError { source }
+    }
+}
+
+impl From<regex::Error> for AppError {
+    fn from(source: regex::Error) -> Self {
+        Self::RegexError {
+            source,
+            context: "regex operation".into(),
+        }
+    }
+}
+
+impl AppError {
+    /// Create a command failure error with context
+    pub fn command_failed<S: Into<String>>(command: S, args: &[&str], message: S) -> Self {
+        Self::CommandFailed {
+            command: command.into(),
+            args: args.iter().map(|&s| s.to_string()).collect(),
+            message: message.into(),
+        }
+    }
+
+    /// Create a parse error with context
+    pub fn parse_error<S: Into<String>, C: Into<String>>(
+        message: S,
+        context: C,
+        source: Option<Box<dyn std::error::Error + Send + Sync>>,
+    ) -> Self {
+        Self::ParseError {
+            message: message.into(),
+            context: context.into(),
+            source,
+        }
+    }
+
+    /// Create an IO error with context
+    pub fn io_error<C: Into<String>>(source: std::io::Error, context: C) -> Self {
+        Self::IoError {
+            source,
+            context: context.into(),
+        }
+    }
+
+    /// Create a regex error with context
+    pub fn regex_error<C: Into<String>>(source: regex::Error, context: C) -> Self {
+        Self::RegexError {
+            source,
+            context: context.into(),
+        }
+    }
+
+    /// Create a command output error with context
+    pub fn command_output_error<C: Into<String>>(source: std::str::Utf8Error, context: C) -> Self {
+        Self::CommandOutputError {
+            source,
+            context: context.into(),
+        }
+    }
+
+    /// Create a Nix store error
+    pub fn nix_store_error<M: Into<String>, P: Into<String>>(message: M, store_path: P) -> Self {
+        Self::NixStoreError {
+            message: message.into(),
+            store_path: store_path.into(),
+        }
+    }
+}

src/main.rs

@@ -1,7 +1,6 @@
 mod print;
 use clap::Parser;
 use core::str;
-use env_logger;
 use log::{debug, error, info, warn};
 use regex::Regex;
 use std::{
@@ -11,133 +10,10 @@ use std::{
     sync::OnceLock,
     thread,
 };
-use thiserror::Error;
 use yansi::Paint;
+mod error;
 mod store;
-
-/// Application errors with thiserror
-#[derive(Debug, Error)]
-enum AppError {
-    #[error("Command failed: {command} {args:?} - {message}")]
-    CommandFailed {
-        command: String,
-        args: Vec<String>,
-        message: String,
-    },
-
-    #[error("Failed to decode command output from {context}: {source}")]
-    CommandOutputError {
-        source: std::str::Utf8Error,
-        context: String,
-    },
-
-    #[error("Failed to parse data in {context}: {message}")]
-    ParseError {
-        message: String,
-        context: String,
-        #[source]
-        source: Option<Box<dyn std::error::Error + Send + Sync>>,
-    },
-
-    #[error("Regex error in {context}: {source}")]
-    RegexError {
-        source: regex::Error,
-        context: String,
-    },
-
-    #[error("IO error in {context}: {source}")]
-    IoError {
-        source: std::io::Error,
-        context: String,
-    },
-
-    #[error("Nix store error: {message} for path: {store_path}")]
-    NixStoreError { message: String, store_path: String },
-}
-
-// Implement From traits to support the ? operator
-impl From<std::io::Error> for AppError {
-    fn from(source: std::io::Error) -> Self {
-        Self::IoError {
-            source,
-            context: "unknown context".into(),
-        }
-    }
-}
-
-impl From<std::str::Utf8Error> for AppError {
-    fn from(source: std::str::Utf8Error) -> Self {
-        Self::CommandOutputError {
-            source,
-            context: "command output".into(),
-        }
-    }
-}
-
-impl From<regex::Error> for AppError {
-    fn from(source: regex::Error) -> Self {
-        Self::RegexError {
-            source,
-            context: "regex operation".into(),
-        }
-    }
-}
-
-impl AppError {
-    /// Create a command failure error with context
-    pub fn command_failed<S: Into<String>>(command: S, args: &[&str], message: S) -> Self {
-        Self::CommandFailed {
-            command: command.into(),
-            args: args.iter().map(|&s| s.to_string()).collect(),
-            message: message.into(),
-        }
-    }
-
-    /// Create a parse error with context
-    pub fn parse_error<S: Into<String>, C: Into<String>>(
-        message: S,
-        context: C,
-        source: Option<Box<dyn std::error::Error + Send + Sync>>,
-    ) -> Self {
-        Self::ParseError {
-            message: message.into(),
-            context: context.into(),
-            source,
-        }
-    }
-
-    /// Create an IO error with context
-    pub fn io_error<C: Into<String>>(source: std::io::Error, context: C) -> Self {
-        Self::IoError {
-            source,
-            context: context.into(),
-        }
-    }
-
-    /// Create a regex error with context
-    pub fn regex_error<C: Into<String>>(source: regex::Error, context: C) -> Self {
-        Self::RegexError {
-            source,
-            context: context.into(),
-        }
-    }
-
-    /// Create a command output error with context
-    pub fn command_output_error<C: Into<String>>(source: std::str::Utf8Error, context: C) -> Self {
-        Self::CommandOutputError {
-            source,
-            context: context.into(),
-        }
-    }
-
-    /// Create a Nix store error
-    pub fn nix_store_error<M: Into<String>, P: Into<String>>(message: M, store_path: P) -> Self {
-        Self::NixStoreError {
-            message: message.into(),
-            store_path: store_path.into(),
-        }
-    }
-}
+use error::AppError;
 
 // Use type alias for Result with our custom error type
 type Result<T> = std::result::Result<T, AppError>;

src/store.rs

@@ -1,29 +1,10 @@
-use async_std::task;
-use sqlx::{Connection, SqliteConnection};
-use std::future;
+use crate::error::AppError;
+use rusqlite::Connection;
 
-// executes a query on the nix db directly
-// to gather all derivations that the derivation given by the path
-// depends on
-//
-// in the future, we might wan't to switch to async
-pub fn get_packages(path: &std::path::Path) -> Result<Vec<String>, String> {
-    let p = path
-        .canonicalize()
-        .ok()
-        .map(|p| p.to_string_lossy().to_string())
-        .ok_or("Could not convert resolve path")?;
+// Use type alias for Result with our custom error type
+type Result<T> = std::result::Result<T, AppError>;
 
-    task::block_on(async {
-        struct Col {
-            path: String,
-        }
-        let mut conn = SqliteConnection::connect("sqlite:///nix/var/nix/db/db.sqlite")
-            .await
-            .map_err(|_| "Could not establish DB connection")?;
-        let query_res = sqlx::query_as!(
-            Col,
-            "
+const QUERY_PKGS: &str = "
 WITH RECURSIVE
 	graph(p) AS (
 		SELECT id 
@@ -35,41 +16,9 @@ WITH RECURSIVE
 	)
 SELECT path from graph
 JOIN ValidPaths ON id = p;
-            ",
-            p
-        )
-        .fetch_all(&mut conn)
-        .await
-        .map_err(|_| "Could not execute package query")?
-        .into_iter()
-        .map(|c| c.path)
-        .collect();
-        Ok::<_, String>(query_res)
-    })
-}
+";
 
-// executes a query on the nix db directly
-// to get the total closure size of the derivation
-// by summing up the nar size of all derivations
-// depending on the derivation
-//
-// in the future, we might wan't to switch to async
-pub fn get_closure_size(path: &std::path::Path) -> Result<i64, String> {
-    let p = path
-        .canonicalize()
-        .ok()
-        .map(|p| p.to_string_lossy().to_string())
-        .ok_or("Could not convert resolve path")?;
-    let size = task::block_on(async {
-        struct Res {
-            sum: Option<i64>,
-        }
-        let mut conn = SqliteConnection::connect("sqlite:///nix/var/nix/db/db.sqlite")
-            .await
-            .map_err(|_| "Could not establish DB connection")?;
-        let query_res = sqlx::query_as!(
-            Res,
-            "
+const QUERY_CLOSURE_SIZE: &str = "
 WITH RECURSIVE
 	graph(p) AS (
 		SELECT id 
@@ -81,18 +30,34 @@ WITH RECURSIVE
 	)
 SELECT SUM(narSize) as sum from graph
 JOIN ValidPaths ON p = id;
-            ",
-            p
-        )
-        .fetch_one(&mut conn)
-        .await
-        .map_err(|_| "Could not execute package query")?
-        .sum
-        .ok_or("Could not get closure size sum")?;
-        Ok::<_, String>(query_res)
-    });
-    size
+";
+
+/// executes a query on the nix db directly
+/// to gather all derivations that the derivation given by the path
+/// depends on
+///
+/// in the future, we might wan't to switch to async
+pub fn get_packages(path: &std::path::Path) -> Result<Vec<String>> {
+    let p: String = path.canonicalize()?.to_string_lossy().into_owned();
+    let conn = Connection::open("/nix/var/nix/db/db.sqlite")?;
+
+    let mut stmt = conn.prepare(QUERY_PKGS)?;
+    let queried_pkgs: std::result::Result<Vec<String>, _> =
+        stmt.query_map([p], |row| row.get(0))?.collect();
+    Ok(queried_pkgs?)
 }
 
-//
-//
+/// executes a query on the nix db directly
+/// to get the total closure size of the derivation
+/// by summing up the nar size of all derivations
+/// depending on the derivation
+///
+/// in the future, we might wan't to switch to async
+pub fn get_closure_size(path: &std::path::Path) -> Result<i64> {
+    let p: String = path.canonicalize()?.to_string_lossy().into_owned();
+    let conn = Connection::open("/nix/var/nix/db/db.sqlite")?;
+
+    let mut stmt = conn.prepare(QUERY_CLOSURE_SIZE)?;
+    let queried_sum = stmt.query_row([p], |row| row.get(0))?;
+    Ok(queried_sum)
+}