Add the PCK08.pca file as an embedded file

You must copy add the DE440s.bsp file to the data folder for rinex.
Rinex expects that this file be available in the AstroData structure.
I could not add it myself because Github doesn't allow adding git lfs to public forks
WARNING: The DE440s.bsp file is large. Once nyx-space/anise#262 is fixed, you should truncate this DE file to only contain a few years and a few planetary ephemerides instead of the whole solar system

.gitattributes

@@ -0,0 +1 @@
+data/de440s.bsp filter=lfs diff=lfs merge=lfs -text

Cargo.toml

@@ -32,3 +32,4 @@ hifitime = { git = "https://github.com/nyx-space/hifitime.git", branch = "master
     "std",
 ] }
 anise = { git = "https://github.com/nyx-space/anise", branch = "master" }
+rust-embed = { version = "8.4.0", features = ["interpolate-folder-path"] }

src/lib.rs

@@ -4,6 +4,8 @@
 extern crate gnss_rs as gnss;
 extern crate nyx_space as nyx;
 
+use rust_embed::Embed;
+
 // private modules
 mod ambiguity;
 mod bancroft;
@@ -15,6 +17,10 @@ mod navigation;
 mod position;
 mod solver;
 
+#[derive(Embed)]
+#[folder = "$CARGO_MANIFEST_DIR/data/"]
+pub struct AstroData;
+
 // mod tracker;
 // pub(crate) mod utils;
 
@@ -32,6 +38,8 @@ pub mod prelude {
     pub use crate::position::Position;
     pub use crate::solver::{Error, InterpolationResult, Solver};
     // re-export
+    pub use anise::constants::frames::{EARTH_J2000, SUN_J2000};
+    pub use anise::naif::SPK;
     pub use anise::prelude::{Aberration, Almanac, Frame};
     pub use gnss::prelude::{Constellation, SV};
     pub use hifitime::{Duration, Epoch, TimeScale};

src/solver.rs

@@ -20,6 +20,7 @@ use anise::{
     },
     errors::{AlmanacError, PhysicsError},
     prelude::{Almanac, Frame, Orbit},
+    structure::{planetocentric::PlanetaryData, PlanetaryDataSet},
 };
 
 use crate::{
@@ -34,6 +35,7 @@ use crate::{
     },
     position::Position,
     prelude::{Duration, Epoch, SV},
+    AstroData,
 };
 
 #[derive(Debug, PartialEq, Error)]
@@ -78,6 +80,8 @@ pub enum Error {
     Almanac(AlmanacError),
     #[error("physics issue: {0}")]
     Physics(PhysicsError),
+    #[error("issue loading Almanac: {0}")]
+    LoadingAlmanac(&'static str),
 }
 
 /// Interpolation result (state vector) that needs to be
@@ -212,18 +216,14 @@ impl<I: std::ops::Fn(Epoch, SV, usize) -> Option<InterpolationResult>> Solver<I>
     ///   in Fixed Altitude or Time Only modes.
     /// - interpolator: function pointer to external method to provide 3D interpolation results.
     pub fn new(cfg: &Config, initial: Option<Position>, interpolator: I) -> Result<Self, Error> {
-        // Question: Should the Almanac be provided by the caller? This would allow customization of the data that's loaded.
-        // For example, I _think_ that only the planetary constants need to be loaded for all of this functionality (hence line 219)
-        // to work, but the `latest` almanac contains planetary positions for 100 years, the latest high precision Earth rotation parameters,
-        // the high precision Moon body frame parameters, and the planetary constants.
-        // let almanac = MetaAlmanac::latest().map_err(Error::Almanac)?;
-        let almanac = Almanac::default()
-            .load_from_metafile(MetaFile {
-                uri: "http://public-data.nyxspace.com/anise/v0.4/pck08.pca".to_string(),
-                crc32: Some(3072159656), // Specifying the CRC allows only downloading the data once.
-            })
-            .map_err(Error::Almanac)?;
         // Regularly refer to https://github.com/nyx-space/anise/blob/master/data/ci_config.dhall for the latest CRC, although it should not change between minor versions!
+        let pck08 = AstroData::get("pck08.pca").ok_or(Error::LoadingAlmanac(
+            "could not find pck08.pca in embedded files",
+        ))?;
+        let almanac = Almanac {
+            planetary_data: PlanetaryDataSet::try_from_bytes(pck08.data.as_ref()).unwrap(),
+            ..Default::default()
+        };
 
         /*
          * print more infos