nix-search-sh

the 'nix-search' in go has a shitty evaluator

users/pbsds/home/profiles/bashrc.d/nix-search.sh

@@ -0,0 +1,97 @@
+nix-search() (
+  set -euo pipefail
+  flake="${1:-nixpkgs}"
+
+  trace(){
+    if [[ -t 2 ]]; then
+      printf >&2 "%s\n" "$@"
+    fi
+  }
+  die() {
+    printf >&2 "%s\n" "$@"
+    exit 1
+  }
+  command -v nix  >/dev/null || die "ERROR: 'nix' not in PATH"
+  command -v jq   >/dev/null || die "ERROR: 'jq' not in PATH"
+  command -v fzf  >/dev/null || die "ERROR: 'fzf' not in PATH"
+  command -v bat  >/dev/null || die "ERROR: 'fzf' not in PATH"
+  command -v tr   >/dev/null || die "ERROR: 'tr' not in PATH"
+  command -v sed  >/dev/null || die "ERROR: 'sed' not in PATH"
+  command -v grep >/dev/null || die "ERROR: 'grep' not in PATH"
+  command -v sort >/dev/null || die "ERROR: 'sort' not in PATH"
+
+  nixpkgs=$(nix eval "$flake"#path --json | jq . -r) # --raw hangs?
+  cache="${XDG_CACHE_HOME:-"$HOME/.cache"}/nix-search-sh"
+
+  export storepath="$cache"/"${flake//"/"/--}"/path
+  export packages_json="$cache"/"${flake//"/"/--}"/packages.json
+  export packages_tsv="$cache"/"${flake//"/"/--}"/packages.tsv
+
+  if [[ ! -f "$storepath" || "$nixpkgs" != "$(cat "$storepath")" ]]; then
+    mkdir -p "$cache"/"$flake"
+
+    # TODO: somehow inherit if user has configured allowUnfree and such in any file
+    trace "Indexing..."
+    # true || \
+    (
+      system="$(nix config show system)"
+      set -x
+      time nix-env >"$packages_json" \
+        --extra-experimental-features no-url-literals \
+        --option system "$system" \
+        -f "$nixpkgs" \
+        -qaP \
+        --json \
+        --meta \
+        --show-trace \
+        --no-allow-import-from-derivation \
+        --arg config '{ allowAliases = false; }'
+    )
+
+    trace "Preprocessing..."
+    trace "+ jq ..."
+    jq <"$packages_json" 'to_entries[] | "--\t\(.key)\t\((.value.meta.description // .value.meta.longDescription // "" | split("\n") | .[0]))\t\(({version: (.value.version)} // {}) + (.value.meta // {}))"' -r \
+      | tr '0123456789' '9876543210' | sort | tr '0123456789' '9876543210' \
+      > "$packages_tsv"
+
+    printf "%s\n" "$nixpkgs" > "$storepath"
+  fi
+
+  show-package() {
+    local attrpath="$(head -n1 <<<"$1")"
+    printf "%s\n" "(toggle preview with 'alt-enter')"
+    printf "\n"
+
+    grep -F -- $'--\t'"$attrpath"$'\t' "$packages_tsv" | cut -f4 | jq '. | [
+        "version   : \(.version)",
+        "homepage  : \(.homepage  // "")",
+        "changelog : \(.changelog // "")",
+        "unfree    : \(.unfree)",
+        "broken    : \(.broken)",
+        "insecure  : \(.insecure)",
+        "",
+        "\(.longDescription // .description)",
+        "",
+        "source: \(.position // "")",
+        "license:", ([if (.license|type)=="array" then .license[] else .license // [][] end | "- \(.fullName // .)"] | join("\n")),
+        "",
+        "platforms:", ([(.platforms // [])[]|"- \(.)"]|join("\n"))
+      ] | join("\n")
+    ' -r | bat --style=plain --language yaml --color=always
+  }
+
+  # attrpaths=$(
+  cut <"$packages_tsv" -f2-3 | tr '\n' '\0' | tr '\t' '\n' \
+    | fzf --read0 --print0 --gap 1 --reverse --bind 'ctrl-a:toggle-all' --bind 'alt-enter:toggle-preview' --multi --tiebreak=begin --preview "$(declare -f show-package); show-package {}" \
+    | tr '\n\0' '\t\n' | cut -f1
+  # )
+
+  # if [[ "$(wc -l <<<"$attrpaths")" -eq 1 ]]; then
+  #   trace " nix profile install $flake#$attrpaths"
+  #   trace " nix run $flake#$attrpaths"
+  #   trace " nix shell $flake#$attrpaths^*"
+  #   trace " nix-shell '<$flake>' -A $flake#$attrpaths"
+  # fi
+
+  # cat <<<"$attrpaths"
+)