deployment: add aarch64/armv7 gnu .deb generation (#739)

Adds .deb generation for aarch64 and armv7 gnu targets in the nightly and deploy workflows.

6 files changed, 98 insertions, 40 deletions

diff --git a/.github/workflows/deployment.yml b/.github/workflows/deployment.yml
index 02670e55..6906f15c 100644
--- a/.github/workflows/deployment.yml
+++ b/.github/workflows/deployment.yml
@@ -54,6 +54,7 @@ jobs:
     container: ${{ matrix.triple.container }}
     env:
       RUST_BACKTRACE: 1
+      BTM_GENERATE: true
     strategy:
       fail-fast: false
       matrix:
@@ -162,11 +163,6 @@ jobs:
           args: --release --verbose --locked --target=${{ matrix.triple.target }} --features deploy
           use-cross: ${{ matrix.triple.cross }}
 
-      - name: Build autocompletion and manpage
-        shell: bash
-        run: |
-          GENERATE=true cargo build
-
       - name: Bundle release and completion (Windows)
         if: matrix.triple.os == 'windows-2019'
         shell: bash
@@ -287,8 +283,26 @@ jobs:
     name: build-deb
     needs: [initialize-release-job]
     runs-on: "ubuntu-18.04"
+    strategy:
+      fail-fast: false
+      matrix:
+        tuple:
+          - { target: "x86_64-unknown-linux-gnu", cross: false, dpkg: amd64 }
+          - {
+              target: "aarch64-unknown-linux-gnu",
+              cross: true,
+              dpkg: arm64,
+              container: "ghcr.io/clementtsang/cargo-deb-aarch64-unknown-linux-gnu",
+            }
+          - {
+              target: "armv7-unknown-linux-gnueabihf",
+              cross: true,
+              dpkg: armhf,
+              container: "ghcr.io/clementtsang/cargo-deb-armv7-unknown-linux-gnueabihf",
+            }
     env:
       RUST_BACKTRACE: 1
+      BTM_GENERATE: true
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -317,38 +331,46 @@ jobs:
           profile: minimal
           toolchain: stable
           override: true
-          target: x86_64-unknown-linux-gnu
+          target: ${{ matrix.tuple.target }}
 
       - uses: Swatinem/rust-cache@cb2cf0cc7c5198d3364b9630e2c3d457f160790c # 1.4.0
-        with:
-          key: x86_64-unknown-linux-gnu-deb
 
       - name: Build
         uses: actions-rs/cargo@v1
         with:
           command: build
-          args: --release --locked --verbose --features deploy
+          args: --release --locked --verbose --features deploy --target ${{ matrix.tuple.target }}
+          use-cross: ${{ matrix.tuple.cross }}
 
-      - name: Build autocompletion and manpage
+      - name: Zip manpage
         shell: bash
         run: |
-          GENERATE=true cargo build
           gzip ./manpage/btm.1
 
-      - name: Build Debian release
+      - name: Build Debian release (x86-64)
+        if: matrix.tuple.cross == false
+        run: |
+          cargo install cargo-deb --version 1.38.0 --locked
+          cargo deb --no-build --target ${{ matrix.tuple.target }}
+          cp ./target/${{ matrix.tuple.target }}/debian/bottom_*.deb ./bottom_${{ matrix.tuple.target }}.deb
+
+      - name: Build Debian release (ARM)
+        if: matrix.tuple.cross == true
         run: |
-          cargo install cargo-deb --version 1.37.0 --locked
-          cargo deb --no-build
-          cp ./target/debian/bottom_*.deb ./bottom_${{ env.RELEASE_VERSION }}_amd64.deb
+          docker pull ${{ matrix.tuple.container }}
+          docker run -t --rm --mount type=bind,source="$(pwd)",target=/volume ${{ matrix.tuple.container }} "--variant ${{ matrix.tuple.dpkg }} --target ${{ matrix.tuple.target }} --no-build" "/volume"
+          cp ./target/${{ matrix.tuple.target }}/debian/bottom-*.deb ./bottom_${{ matrix.tuple.target }}.deb
 
       - name: Test Debian release
-        run: sudo dpkg -i ./bottom_${{ env.RELEASE_VERSION }}_amd64.deb
+        run: |
+          dpkg -I ./bottom_${{ matrix.tuple.target }}.deb
+          dpkg -I ./bottom_${{ matrix.tuple.target }}.deb | grep ${{ matrix.tuple.dpkg }} && echo "Found correct architecture"
 
       - name: Create release directory for artifact, move file
         shell: bash
         run: |
           mkdir release
-          mv bottom_${{ env.RELEASE_VERSION }}_amd64.deb release/
+          mv bottom_${{ matrix.tuple.target }}.deb release/
 
       - name: Save release as artifact
         uses: actions/upload-artifact@v2
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 37b26cae..fdbf1ce4 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -50,6 +50,7 @@ jobs:
     container: ${{ matrix.triple.container }}
     env:
       RUST_BACKTRACE: 1
+      BTM_GENERATE: true
     strategy:
       fail-fast: false
       matrix:
@@ -158,11 +159,6 @@ jobs:
           args: --release --locked --verbose --target=${{ matrix.triple.target }} --features deploy
           use-cross: ${{ matrix.triple.cross }}
 
-      - name: Build autocompletion and manpage
-        shell: bash
-        run: |
-          GENERATE=true cargo build
-
       - name: Bundle release and completion (Windows)
         if: matrix.triple.os == 'windows-2019'
         shell: bash
@@ -281,8 +277,26 @@ jobs:
     name: build-deb
     needs: [initialize-job]
     runs-on: "ubuntu-18.04"
+    strategy:
+      fail-fast: false
+      matrix:
+        tuple:
+          - { target: "x86_64-unknown-linux-gnu", cross: false, dpkg: amd64 }
+          - {
+              target: "aarch64-unknown-linux-gnu",
+              cross: true,
+              dpkg: arm64,
+              container: "ghcr.io/clementtsang/cargo-deb-aarch64-unknown-linux-gnu",
+            }
+          - {
+              target: "armv7-unknown-linux-gnueabihf",
+              cross: true,
+              dpkg: armhf,
+              container: "ghcr.io/clementtsang/cargo-deb-armv7-unknown-linux-gnueabihf",
+            }
     env:
       RUST_BACKTRACE: 1
+      BTM_GENERATE: true
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -311,38 +325,46 @@ jobs:
           profile: minimal
           toolchain: stable
           override: true
-          target: x86_64-unknown-linux-gnu
+          target: ${{ matrix.tuple.target }}
 
       - uses: Swatinem/rust-cache@cb2cf0cc7c5198d3364b9630e2c3d457f160790c # 1.4.0
-        with:
-          key: x86_64-unknown-linux-gnu-deb
 
       - name: Build
         uses: actions-rs/cargo@v1
         with:
           command: build
-          args: --release --locked --verbose --features deploy
+          args: --release --locked --verbose --features deploy --target ${{ matrix.tuple.target }}
+          use-cross: ${{ matrix.tuple.cross }}
 
-      - name: Build autocompletion and manpage
+      - name: Zip manpage
         shell: bash
         run: |
-          GENERATE=true cargo build
           gzip ./manpage/btm.1
 
-      - name: Build Debian release
+      - name: Build Debian release (x86-64)
+        if: matrix.tuple.cross == false
+        run: |
+          cargo install cargo-deb --version 1.38.0 --locked
+          cargo deb --no-build --target ${{ matrix.tuple.target }}
+          cp ./target/${{ matrix.tuple.target }}/debian/bottom_*.deb ./bottom_${{ matrix.tuple.target }}.deb
+
+      - name: Build Debian release (ARM)
+        if: matrix.tuple.cross == true
         run: |
-          cargo install cargo-deb --version 1.37.0 --locked
-          cargo deb --no-build
-          cp ./target/debian/bottom_*.deb ./bottom_${{ env.RELEASE_VERSION }}_amd64.deb
+          docker pull ${{ matrix.tuple.container }}
+          docker run -t --rm --mount type=bind,source="$(pwd)",target=/volume ${{ matrix.tuple.container }} "--variant ${{ matrix.tuple.dpkg }} --target ${{ matrix.tuple.target }} --no-build" "/volume"
+          cp ./target/${{ matrix.tuple.target }}/debian/bottom-*.deb ./bottom_${{ matrix.tuple.target }}.deb
 
       - name: Test Debian release
-        run: sudo dpkg -i ./bottom_${{ env.RELEASE_VERSION }}_amd64.deb
+        run: |
+          dpkg -I ./bottom_${{ matrix.tuple.target }}.deb
+          dpkg -I ./bottom_${{ matrix.tuple.target }}.deb | grep ${{ matrix.tuple.dpkg }} && echo "Found correct architecture"
 
       - name: Create release directory for artifact, move file
         shell: bash
         run: |
           mkdir release
-          mv bottom_${{ env.RELEASE_VERSION }}_amd64.deb release/
+          mv bottom_${{ matrix.tuple.target }}.deb release/
 
       - name: Save Debian file as artifacts
         uses: actions/upload-artifact@v2
diff --git a/Cargo.toml b/Cargo.toml
index fc529251..f82ba4b5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -115,10 +115,16 @@ extended-description = """\
 A customizable cross-platform graphical process/system monitor for the terminal. Supports Linux, macOS, and Windows.
 
 By default, bottom will look for a config file in ~/.config/bottom/bottom.toml.
-If one is not specified it will fall back to defaults.  If a config file does not
+If one is not specified it will fall back to defaults. If a config file does not
 exist at the specified or default location, a blank one will be created for the user.
 """
 
+[package.metadata.deb.variants.arm64]
+depends = "libc6:arm64 (>= 2.28)"
+
+[package.metadata.deb.variants.armhf]
+depends = "libc6:armhf (>= 2.28)"
+
 [package.metadata.wix]
 output = "bottom_x86_64_installer.msi"
 
diff --git a/Cross.toml b/Cross.toml
new file mode 100644
index 00000000..f6e8648d
--- /dev/null
+++ b/Cross.toml
@@ -0,0 +1,2 @@
+[build.env]
+passthrough = ["RUST_BACKTRACE", "BTM_GENERATE"]
diff --git a/README.md b/README.md
index a2a5c6e9..7b3aa938 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@
 - [Installation](#installation)
   - [Cargo](#cargo)
   - [Arch Linux](#arch-linux)
-  - [Debian/Ubuntu (x86-64)](#debianubuntu-x86-64)
+  - [Debian/Ubuntu](#debianubuntu)
   - [Snap](#snap)
   - [Fedora/CentOS](#fedoracentos)
   - [Gentoo](#gentoo)
@@ -126,15 +126,21 @@ There is an official package that can be installed with `pacman`:
 sudo pacman -Syu bottom
 ```
 
-### Debian/Ubuntu (x86-64)
+### Debian/Ubuntu
 
-A `.deb` file is provided on each [release](https://github.com/ClementTsang/bottom/releases/latest):
+<!-- FIXME: Update this when bumping version, as the format has changed. -->
+
+A `.deb` file is provided on each [release](https://github.com/ClementTsang/bottom/releases/latest) (currently only for x86-64):
 
 ```bash
 curl -LO https://github.com/ClementTsang/bottom/releases/download/0.6.8/bottom_0.6.8_amd64.deb
 sudo dpkg -i bottom_0.6.8_amd64.deb
 ```
 
+For ARM (aarch64 and armv7), for now, releases are currently only provided on
+[nightly builds](https://github.com/ClementTsang/bottom/releases/tag/nightly), but will be provided alongside the
+x86-64 builds in future releases.
+
 ### Snap
 
 bottom is available as a [snap](https://snapcraft.io/install/bottom/ubuntu):
diff --git a/build.rs b/build.rs
index fce34b48..5e069fb5 100644
--- a/build.rs
+++ b/build.rs
@@ -23,7 +23,7 @@ fn create_dir(dir: &Path) -> Result<()> {
 }
 
 fn main() -> Result<()> {
-    if env::var_os("GENERATE").is_some() {
+    if env::var_os("BTM_GENERATE").is_some() {
         // OUT_DIR is where extra build files are written to for Cargo.
         let completion_out_dir = PathBuf::from("completion");
         let manpage_out_dir = PathBuf::from("manpage");
@@ -49,7 +49,7 @@ fn main() -> Result<()> {
 
     println!("cargo:rerun-if-changed=build.rs");
     println!("cargo:rerun-if-changed=./src/clap.rs");
-    println!("cargo:rerun-if-env-changed=GENERATE");
+    println!("cargo:rerun-if-env-changed=BTM_GENERATE");
 
     Ok(())
 }