feat: mojo build backend (#251)

Author: sstadick

Cargo.lock

@@ -0,0 +1,34 @@
+[package]
+name = "pixi-build-mojo"
+version = "0.1.0"
+edition.workspace = true
+
+[profile.dev.package]
+insta.opt-level = 3
+similar.opt-level = 3
+
+[dependencies]
+async-trait = { workspace = true }
+chrono = { workspace = true }
+indexmap = { workspace = true }
+miette = { workspace = true }
+minijinja = { workspace = true }
+rattler_conda_types = { workspace = true }
+rattler_package_streaming = { workspace = true }
+rattler-build = { workspace = true }
+serde = { workspace = true, features = ["derive"] }
+serde_json = { workspace = true }
+tempfile = { workspace = true }
+tokio = { workspace = true, features = ["macros"] }
+
+pixi-build-backend = { workspace = true }
+
+pixi_build_types = { workspace = true }
+pixi_manifest = { workspace = true }
+pixi_build_type_conversions = { workspace = true }
+
+recipe-stage0 = { workspace = true }
+
+[dev-dependencies]
+insta = { version = "1.42.1", features = ["yaml", "redactions", "filters"] }
+rstest = "0.23"

crates/pixi-build-mojo/Cargo.toml

@@ -0,0 +1,22 @@
+{%- set is_cmd_exe = build_platform == "windows" -%}
+{%- macro env(key) -%}
+{%- if is_cmd_exe %}{{ "%" ~ key ~ "%" }}{% else %}{{ "$" ~key }}{% endif -%}
+{% endmacro -%}
+
+{# - Set up common variables -#}
+{%- set library_prefix =  "%LIBRARY_PREFIX%" if build_platform == "windows" else "$PREFIX" -%}
+
+mojo --version
+
+
+{#- Build any binaries -#}
+{% if bins %}
+	{% for bin in bins %}
+		mojo build {{ bin.extra_args | join(" ")  }} {{ bin.path }} -o {{ library_prefix }}/bin/{{ bin.name }}
+	{% endfor %}
+{% endif %}
+
+{#- Build pkg -#}
+{% if pkg %}
+	mojo package {{ pkg.extra_args | join(" ") }} {{ pkg.path }} -o {{ library_prefix }}/lib/mojo/{{ pkg.name}}.mojopkg
+{% endif %}

crates/pixi-build-mojo/src/build_script.j2

@@ -0,0 +1,24 @@
+use super::config::{MojoBinConfig, MojoPkgConfig};
+use minijinja::Environment;
+use serde::Serialize;
+
+#[derive(Debug, Serialize)]
+pub struct BuildScriptContext {
+    /// The directory where the source code is located, the manifest root.
+    pub source_dir: String,
+    /// Any executable artifacts to create.
+    pub bins: Option<Vec<MojoBinConfig>>,
+    /// Any packages to create.
+    pub pkg: Option<MojoPkgConfig>,
+}
+
+impl BuildScriptContext {
+    pub fn render(&self) -> Vec<String> {
+        let env = Environment::new();
+        let template = env
+            .template_from_str(include_str!("build_script.j2"))
+            .unwrap();
+        let rendered = template.render(self).unwrap().to_string();
+        rendered.lines().map(|s| s.to_string()).collect()
+    }
+}