From 0791356e3e92b72d43a09f58b57dabfacfcdc689 Mon Sep 17 00:00:00 2001
From: Ajeet D'Souza <98ajeet@gmail.com>
Date: Tue, 12 Oct 2021 01:35:24 +0530
Subject: [PATCH] Use workspace for xtask (#276)

---
 .cargo/config.toml                      |   2 +-
 .github/workflows/ci.yml                |   2 +-
 Cargo.lock                              | 157 +++++++++++++++++++--
 Cargo.toml                              |  16 ++-
 shell.nix                               |  11 +-
 src/shell.rs                            |  13 +-
 templates/fish.txt                      |   2 +-
 tests/{completion.rs => completions.rs} |   4 +-
 tests/man.rs                            |  28 ----
 xtask/Cargo.lock                        | 170 -----------------------
 xtask/Cargo.toml                        |  11 +-
 xtask/src/main.rs                       | 174 ++++++++++++++++++------
 12 files changed, 309 insertions(+), 281 deletions(-)
 rename tests/{completion.rs => completions.rs} (94%)
 delete mode 100644 tests/man.rs
 delete mode 100644 xtask/Cargo.lock

diff --git a/.cargo/config.toml b/.cargo/config.toml
index d8c2032b..35049cbc 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -1,2 +1,2 @@
 [alias]
-xtask = "run --manifest-path ./xtask/Cargo.toml --"
+xtask = "run --package xtask --"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index aed25a25..52ac2a20 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,4 +21,4 @@ jobs:
         if: ${{ matrix.os != 'windows-latest' }}
         with:
           nix_path: nixpkgs=https://github.com/NixOS/nixpkgs/archive/20.09.tar.gz
-      - run: cargo xtask --nix=${{ matrix.os != 'windows-latest' }} ci
+      - run: cargo xtask ci
diff --git a/Cargo.lock b/Cargo.lock
index 399d20e6..a9f3a1cb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "aho-corasick"
+version = "0.7.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.44"
@@ -57,9 +66,9 @@ dependencies = [
 
 [[package]]
 name = "assert_cmd"
-version = "2.0.1"
+version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b800c4403e8105d959595e1f88119e78bc12bc874c4336973658b648a746ba93"
+checksum = "e996dc7940838b7ef1096b882e29ec30a3149a3a443cdc8dba19ed382eca1fe2"
 dependencies = [
  "bstr",
  "doc-comment",
@@ -170,6 +179,16 @@ dependencies = [
  "clap",
 ]
 
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d82cfc11ce7f2c3faef78d8a684447b40d503d9681acebed6cb728d45940c4db"
+dependencies = [
+ "cfg-if",
+ "lazy_static",
+]
+
 [[package]]
 name = "difflib"
 version = "0.4.0"
@@ -215,6 +234,12 @@ version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
 
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
 [[package]]
 name = "funty"
 version = "1.1.0"
@@ -238,6 +263,19 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 
+[[package]]
+name = "globset"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "10463d9ff00a2a068db14231982f5132edebad0d7660cd956a1c30292dbcbfbd"
+dependencies = [
+ "aho-corasick",
+ "bstr",
+ "fnv",
+ "log",
+ "regex",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.11.2"
@@ -262,6 +300,24 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "ignore"
+version = "0.4.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "713f1b139373f96a2e0ce3ac931cd01ee973c3c5dd7c40c0c2efe96ad2b6751d"
+dependencies = [
+ "crossbeam-utils",
+ "globset",
+ "lazy_static",
+ "log",
+ "memchr",
+ "regex",
+ "same-file",
+ "thread_local",
+ "walkdir",
+ "winapi-util",
+]
+
 [[package]]
 name = "indexmap"
 version = "1.7.0"
@@ -306,6 +362,15 @@ version = "0.2.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd8f7255a17a627354f321ef0055d63b898c6fb27eff628af4d1b66b7331edf6"
 
+[[package]]
+name = "log"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "memchr"
 version = "2.4.1"
@@ -334,6 +399,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "once_cell"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "692fcb63b64b1758029e0a96ee63e049ce8c5948587f2f7208df04625e5f6b56"
+
 [[package]]
 name = "ordered-float"
 version = "2.8.0"
@@ -357,9 +428,9 @@ checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
 
 [[package]]
 name = "predicates"
-version = "2.0.2"
+version = "2.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c143348f141cc87aab5b950021bac6145d0e5ae754b0591de23244cee42c9308"
+checksum = "5c6ce811d0b2e103743eec01db1c50612221f173084ce2f7941053e94b6bb474"
 dependencies = [
  "difflib",
  "itertools",
@@ -374,12 +445,12 @@ checksum = "57e35a3326b75e49aa85f5dc6ec15b41108cf5aee58eabb1f274dd18b73c2451"
 
 [[package]]
 name = "predicates-tree"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7dd0fd014130206c9352efbdc92be592751b2b9274dff685348341082c6ea3d"
+checksum = "338c7be2905b732ae3984a2f40032b5e94fd8f52505b186c7d4d68d193445df7"
 dependencies = [
  "predicates-core",
- "treeline",
+ "termtree",
 ]
 
 [[package]]
@@ -489,12 +560,29 @@ dependencies = [
  "redox_syscall",
 ]
 
+[[package]]
+name = "regex"
+version = "1.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d07a8629359eb56f1e2fb1652bb04212c072a87ba68546a04065d525673ac461"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
 [[package]]
 name = "regex-automata"
 version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c230d73fb8d8c1b9c0b3135c5142a8acee3a0558fb8db5cf1cb65f8d7862132"
 
+[[package]]
+name = "regex-syntax"
+version = "0.6.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
+
 [[package]]
 name = "remove_dir_all"
 version = "0.5.3"
@@ -532,6 +620,15 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
 
+[[package]]
+name = "same-file"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "semver"
 version = "1.0.4"
@@ -558,6 +655,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "shell-words"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6fa3938c99da4914afedd13bf3d79bcb6c277d1b2c398d23257a304d9e1b074"
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -572,9 +675,9 @@ checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
 [[package]]
 name = "syn"
-version = "1.0.78"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4eac2e6c19f5c3abc0c229bea31ff0b9b091c7b14990e8924b92902a303a0c0"
+checksum = "d010a1623fbd906d51d650a9916aaefc05ffa0e4053ff7fe601167f3e715d194"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -610,6 +713,12 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "termtree"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78fbf2dd23e79c28ccfa2472d3e6b3b189866ffef1aeb91f17c2d968b6586378"
+
 [[package]]
 name = "textwrap"
 version = "0.14.2"
@@ -620,10 +729,13 @@ dependencies = [
 ]
 
 [[package]]
-name = "treeline"
-version = "0.1.0"
+name = "thread_local"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a7f741b240f1a48843f9b8e0444fb55fb2a4ff67293b50a9179dfd5ea67f8d41"
+checksum = "8018d24e04c95ac8790716a5987d0fec4f8b27249ffa0f7d33f1369bdfb88cbd"
+dependencies = [
+ "once_cell",
+]
 
 [[package]]
 name = "unicode-segmentation"
@@ -664,6 +776,17 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "walkdir"
+version = "2.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "808cf2735cd4b6866113f648b791c6adc5714537bc222d9347bb203386ffda56"
+dependencies = [
+ "same-file",
+ "winapi",
+ "winapi-util",
+]
+
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"
@@ -707,6 +830,16 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"
 
+[[package]]
+name = "xtask"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "clap",
+ "ignore",
+ "shell-words",
+]
+
 [[package]]
 name = "zoxide"
 version = "0.7.5"
diff --git a/Cargo.toml b/Cargo.toml
index 281f5d7f..08b2d477 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,6 +9,12 @@ license = "MIT"
 keywords = ["cli"]
 categories = ["command-line-utilities", "filesystem"]
 
+[badges]
+maintenance = { status = "actively-developed" }
+
+[workspace]
+members = ["xtask/"]
+
 [dependencies]
 anyhow = "1.0.32"
 askama = { version = "0.10.3", default-features = false }
@@ -27,17 +33,17 @@ rand = { version = "0.8.4", features = [
     "small_rng",
 ], default-features = false }
 
-[dev-dependencies]
-assert_cmd = "2.0.0"
-rstest = "0.11.0"
-
 [build-dependencies]
 clap = "=3.0.0-beta.4"
 clap_generate = "=3.0.0-beta.4"
 
+[dev-dependencies]
+assert_cmd = "2.0.0"
+rstest = "0.11.0"
+
 [features]
 default = []
-nix_tests = []
+nix = []
 
 [profile.release]
 codegen-units = 1
diff --git a/shell.nix b/shell.nix
index dcee1a30..2b081fc2 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,9 +1,11 @@
 let
-  rust = import (builtins.fetchTarball "https://github.com/oxalica/rust-overlay/archive/ad311f5bb5c5ef475985f1e0f264e831470a8510.tar.gz");
+  rust = import (builtins.fetchTarball
+    "https://github.com/oxalica/rust-overlay/archive/ad311f5bb5c5ef475985f1e0f264e831470a8510.tar.gz");
   pkgs = import <nixpkgs> { overlays = [ rust ]; };
-  pkgs-latest = import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/b4692e4197869c42c46d77e31af7e687e1892f55.tar.gz") {};
-in
-pkgs.mkShell {
+  pkgs-latest = import (fetchTarball
+    "https://github.com/NixOS/nixpkgs/archive/b4692e4197869c42c46d77e31af7e687e1892f55.tar.gz")
+    { };
+in pkgs.mkShell {
   buildInputs = [
     # Rust
     pkgs.rust-bin.stable.latest.default
@@ -21,6 +23,7 @@ pkgs.mkShell {
     # Tools
     pkgs-latest.cargo-audit
     pkgs-latest.mandoc
+    pkgs-latest.nixfmt
     pkgs-latest.nodePackages.markdownlint-cli
     pkgs-latest.python3Packages.black
     pkgs-latest.python3Packages.mypy
diff --git a/src/shell.rs b/src/shell.rs
index 2b857990..6199a049 100644
--- a/src/shell.rs
+++ b/src/shell.rs
@@ -41,7 +41,7 @@ make_template!(Powershell, "powershell.txt");
 make_template!(Xonsh, "xonsh.txt");
 make_template!(Zsh, "zsh.txt");
 
-#[cfg(feature = "nix_tests")]
+#[cfg(feature = "nix")]
 #[cfg(test)]
 mod tests {
     use askama::Template;
@@ -321,16 +321,7 @@ mod tests {
         let mut source = Xonsh(&opts).render().unwrap();
         source.push('\n');
 
-        let tempdir = tempfile::tempdir().unwrap();
-        let tempdir = tempdir.path().to_str().unwrap();
-
-        Command::new("pylint")
-            .args(&["--from-stdin", "zoxide"])
-            .env("HOME", tempdir)
-            .write_stdin(source)
-            .assert()
-            .success()
-            .stderr("");
+        Command::new("pylint").args(&["--from-stdin", "zoxide"]).write_stdin(source).assert().success().stderr("");
     }
 
     #[rstest]
diff --git a/templates/fish.txt b/templates/fish.txt
index 573f71c9..47bceba2 100644
--- a/templates/fish.txt
+++ b/templates/fish.txt
@@ -30,7 +30,6 @@ function __zoxide_cd
 {%- if echo %}
     and __zoxide_pwd
 {%- endif %}
-    and builtin commandline -f repaint
 end
 
 {{ section }}
@@ -124,6 +123,7 @@ end
 
 __zoxide_unset {{cmd}}
 alias {{cmd}}=__zoxide_z
+complete -e {{cmd}}
 complete -c {{cmd}} -f -a '(__zoxide_z_complete)'
 
 __zoxide_unset {{cmd}}i
diff --git a/tests/completion.rs b/tests/completions.rs
similarity index 94%
rename from tests/completion.rs
rename to tests/completions.rs
index 9887096d..56975d8e 100644
--- a/tests/completion.rs
+++ b/tests/completions.rs
@@ -1,5 +1,5 @@
-//! Syntax checking for auto-generated shell completions.
-#![cfg(feature = "nix_tests")]
+//! Test clap generated completions.
+#![cfg(feature = "nix")]
 
 use assert_cmd::Command;
 
diff --git a/tests/man.rs b/tests/man.rs
deleted file mode 100644
index 6792fa1d..00000000
--- a/tests/man.rs
+++ /dev/null
@@ -1,28 +0,0 @@
-//! Syntax checking for manpages.
-#![cfg(feature = "nix_tests")]
-
-use assert_cmd::Command;
-
-use std::fs;
-
-#[test]
-fn mandoc_lint() {
-    let paths = fs::read_dir("man")
-        .unwrap()
-        .filter_map(|entry| {
-            let path = entry.unwrap().path();
-            if path.is_file() && path.extension() == Some("1".as_ref()) {
-                Some(path.to_str().unwrap().to_string())
-            } else {
-                None
-            }
-        })
-        .collect::<Vec<_>>();
-    Command::new("mandoc")
-        .args(&["-man", "-Wall", "-Tlint", "--"])
-        .args(&paths)
-        .assert()
-        .success()
-        .stdout("")
-        .stderr("");
-}
diff --git a/xtask/Cargo.lock b/xtask/Cargo.lock
deleted file mode 100644
index c026cf82..00000000
--- a/xtask/Cargo.lock
+++ /dev/null
@@ -1,170 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "autocfg"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
-
-[[package]]
-name = "bitflags"
-version = "1.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
-
-[[package]]
-name = "clap"
-version = "3.0.0-beta.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcd70aa5597dbc42f7217a543f9ef2768b2ef823ba29036072d30e1d88e98406"
-dependencies = [
- "bitflags",
- "clap_derive",
- "indexmap",
- "lazy_static",
- "os_str_bytes",
- "textwrap",
- "vec_map",
-]
-
-[[package]]
-name = "clap_derive"
-version = "3.0.0-beta.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b5bb0d655624a0b8770d1c178fb8ffcb1f91cc722cb08f451e3dc72465421ac"
-dependencies = [
- "heck",
- "proc-macro-error",
- "proc-macro2",
- "quote",
- "syn",
-]
-
-[[package]]
-name = "hashbrown"
-version = "0.11.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
-
-[[package]]
-name = "heck"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d621efb26863f0e9924c6ac577e8275e5e6b77455db64ffa6c65c904e9e132c"
-dependencies = [
- "unicode-segmentation",
-]
-
-[[package]]
-name = "indexmap"
-version = "1.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
-dependencies = [
- "autocfg",
- "hashbrown",
-]
-
-[[package]]
-name = "lazy_static"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
-
-[[package]]
-name = "os_str_bytes"
-version = "3.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6acbef58a60fe69ab50510a55bc8cdd4d6cf2283d27ad338f54cb52747a9cf2d"
-
-[[package]]
-name = "proc-macro-error"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
-dependencies = [
- "proc-macro-error-attr",
- "proc-macro2",
- "quote",
- "syn",
- "version_check",
-]
-
-[[package]]
-name = "proc-macro-error-attr"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
-dependencies = [
- "proc-macro2",
- "quote",
- "version_check",
-]
-
-[[package]]
-name = "proc-macro2"
-version = "1.0.29"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9f5105d4fdaab20335ca9565e106a5d9b82b6219b5ba735731124ac6711d23d"
-dependencies = [
- "unicode-xid",
-]
-
-[[package]]
-name = "quote"
-version = "1.0.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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-dependencies = [
- "proc-macro2",
-]
-
-[[package]]
-name = "syn"
-version = "1.0.76"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c6f107db402c2c2055242dbf4d2af0e69197202e9faacbef9571bbe47f5a1b84"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-xid",
-]
-
-[[package]]
-name = "textwrap"
-version = "0.14.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0066c8d12af8b5acd21e00547c3797fde4e8677254a7ee429176ccebbe93dd80"
-
-[[package]]
-name = "unicode-segmentation"
-version = "1.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8895849a949e7845e06bd6dc1aa51731a103c42707010a5b591c0038fb73385b"
-
-[[package]]
-name = "unicode-xid"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
-
-[[package]]
-name = "vec_map"
-version = "0.8.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
-
-[[package]]
-name = "version_check"
-version = "0.9.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
-
-[[package]]
-name = "xtask"
-version = "0.1.0"
-dependencies = [
- "clap",
-]
diff --git a/xtask/Cargo.toml b/xtask/Cargo.toml
index 5926f49f..68523405 100644
--- a/xtask/Cargo.toml
+++ b/xtask/Cargo.toml
@@ -2,11 +2,10 @@
 name = "xtask"
 version = "0.1.0"
 edition = "2018"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+publish = false
 
 [dependencies]
-clap = { version = "=3.0.0-beta.4", default-features = false, features = [
-    "derive",
-    "std",
-] }
+anyhow = "1.0.32"
+clap = "=3.0.0-beta.4"
+ignore = "0.4.18"
+shell-words = "1.0.0"
diff --git a/xtask/src/main.rs b/xtask/src/main.rs
index bc150314..6de70d47 100644
--- a/xtask/src/main.rs
+++ b/xtask/src/main.rs
@@ -1,56 +1,150 @@
-use std::process::Command;
-
+use anyhow::{bail, Context, Result};
 use clap::Clap;
+use ignore::Walk;
+
+use std::env;
+use std::ffi::OsStr;
+use std::path::PathBuf;
+use std::process::{self, Command};
+
+fn main() -> Result<()> {
+    let nix_enabled = enable_nix();
 
-#[derive(Clap, Debug)]
-struct App {
-    #[clap(subcommand)]
-    task: Task,
-    #[clap(long)]
-    nix: Option<bool>,
+    let dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+    let dir = dir.parent().with_context(|| format!("could not find workspace root: {}", dir.display()))?;
+    env::set_current_dir(dir).with_context(|| format!("could not set current directory: {}", dir.display()))?;
+
+    let app = App::parse();
+    match app {
+        App::CI => run_ci(nix_enabled)?,
+        App::Fmt { check } => run_fmt(nix_enabled, check)?,
+        App::Lint => run_lint(nix_enabled)?,
+        App::Test { name } => run_tests(nix_enabled, &name)?,
+    }
+
+    Ok(())
 }
 
-#[derive(Clap, Debug)]
-enum Task {
+#[derive(Clap)]
+enum App {
     CI,
-    Test { keywords: Vec<String> },
+    Fmt {
+        #[clap(long)]
+        check: bool,
+    },
+    Lint,
+    Test {
+        #[clap(default_value = "")]
+        name: String,
+    },
 }
 
-fn run(args: &[&str], nix: bool) {
-    let args_str = args.join(" ");
-    println!(">>> {}", args_str);
+trait CommandExt {
+    fn _run(self) -> Result<()>;
+}
 
-    let status = if nix {
-        Command::new("nix-shell").args(&["--pure", "--run", &args_str]).status()
-    } else {
-        let (cmd, args) = args.split_first().unwrap();
-        Command::new(cmd).args(args).status()
-    };
-    if !status.unwrap().success() {
-        panic!("command exited with an error");
+impl CommandExt for &mut Command {
+    fn _run(self) -> Result<()> {
+        println!(">>> {:?}", self);
+        let status = self.status().with_context(|| format!("command failed to start: {:?}", self))?;
+        if !status.success() {
+            bail!("command failed: {:?} with status: {:?}", self, status);
+        }
+        Ok(())
     }
 }
 
-fn main() {
-    let app = App::parse();
-    let nix = app.nix.unwrap_or_else(|| Command::new("nix-shell").arg("--version").output().is_ok());
-    let run = |args: &[&str]| run(args, nix);
-    match app.task {
-        Task::CI => {
-            let color = if std::env::var_os("CI").is_some() { "--color=always" } else { "" };
-            run(&["cargo", "fmt", "--", "--check", color, "--files-with-diff"]);
-            run(&["cargo", "check", "--all-features", color]);
-            run(&["cargo", "clippy", "--all-features", color, "--", "--deny=clippy::all", "--deny=warnings"]);
-            run(&["cargo", "test", if nix { "--all-features" } else { "" }, color, "--no-fail-fast"]);
-            run(&["cargo", "audit", color, "--deny=warnings"]);
-            if nix {
-                run(&["markdownlint", "--ignore-path=.gitignore", "."]);
+fn run_ci(nix_enabled: bool) -> Result<()> {
+    let color: &[&str] = if is_ci() { &["--color=always"] } else { &[] };
+    Command::new("cargo").args(&["check", "--all-features"]).args(color)._run()?;
+
+    run_fmt(nix_enabled, true)?;
+    run_lint(nix_enabled)?;
+    run_tests(nix_enabled, "")
+}
+
+fn run_fmt(nix_enabled: bool, check: bool) -> Result<()> {
+    // Run cargo-fmt.
+    let color: &[&str] = if is_ci() { &["--color=always"] } else { &[] };
+    let check_args: &[&str] = if check { &["--check", "--files-with-diff"] } else { &[] };
+    Command::new("cargo").args(&["fmt", "--all", "--"]).args(color).args(check_args)._run()?;
+
+    // Run nixfmt.
+    if nix_enabled {
+        for result in Walk::new("./") {
+            let entry = result.unwrap();
+            let path = entry.path();
+            if path.is_file() && path.extension() == Some(OsStr::new("nix")) {
+                let check_args: &[&str] = if check { &["--check"] } else { &[] };
+                Command::new("nixfmt").args(check_args).arg("--").arg(path)._run()?;
             }
         }
-        Task::Test { keywords } => {
-            let mut args = vec!["cargo", "test", if nix { "--all-features" } else { "" }, "--no-fail-fast", "--"];
-            args.extend(keywords.iter().map(String::as_str));
-            run(&args);
+    }
+
+    Ok(())
+}
+
+fn run_lint(nix_enabled: bool) -> Result<()> {
+    // Run cargo-clippy.
+    let color: &[&str] = if is_ci() { &["--color=always"] } else { &[] };
+    Command::new("cargo").args(&["clippy", "--all-features", "--all-targets"]).args(color)._run()?;
+
+    if nix_enabled {
+        // Run cargo-audit.
+        let color: &[&str] = if is_ci() { &["--color=always"] } else { &[] };
+        Command::new("cargo").args(&["audit", "--deny=warnings"]).args(color)._run()?;
+
+        // Run markdownlint.
+        for result in Walk::new("./") {
+            let entry = result.unwrap();
+            let path = entry.path();
+            if path.is_file() && path.extension() == Some(OsStr::new("md")) {
+                Command::new("markdownlint").arg(path)._run()?;
+            }
+        }
+
+        // Run mandoc with linting enabled.
+        for result in Walk::new("./man/") {
+            let entry = result.unwrap();
+            let path = entry.path();
+            if path.is_file() && path.extension() == Some(OsStr::new("1")) {
+                Command::new("mandoc").args(&["-man", "-Wall", "-Tlint", "--"]).arg(path)._run()?;
+            }
         }
     }
+
+    Ok(())
+}
+
+fn run_tests(nix_enabled: bool, name: &str) -> Result<()> {
+    let color: &[&str] = if is_ci() { &["--color=always"] } else { &[] };
+    let features: &[&str] = if nix_enabled { &["--all-features"] } else { &[] };
+    Command::new("cargo").args(&["test", "--no-fail-fast", "--workspace"]).args(color).args(features).arg(name)._run()
+}
+
+fn is_ci() -> bool {
+    env::var_os("CI").is_some()
+}
+
+fn enable_nix() -> bool {
+    let nix_supported = cfg!(any(target_os = "linux", target_os = "macos"));
+    if !nix_supported {
+        return false;
+    }
+    let nix_enabled = env::var_os("IN_NIX_SHELL").unwrap_or_default() == "pure";
+    if nix_enabled {
+        return true;
+    }
+    let nix_detected = Command::new("nix-shell").arg("--version").status().map(|s| s.success()).unwrap_or(false);
+    if !nix_detected {
+        return false;
+    }
+
+    println!("Detected Nix in environment, re-running in Nix.");
+    let args = env::args();
+    let cmd = shell_words::join(args);
+    let mut nix_path = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+    nix_path.push("../shell.nix");
+    let status = Command::new("nix-shell").args(&["--pure", "--run", &cmd, "--"]).arg(nix_path).status().unwrap();
+    process::exit(status.code().unwrap_or(1));
 }