tjh.dev
1#!/bin/bash
2
3PATH="@path@:$PATH"
4IS_DARWIN="@is_darwin@"
5
6set -eu
7set -o pipefail
8
9DEBUG=0
10MARKDOWN=0
11HOST_OS=0
12SANDBOX=0
13while true; do
14 case "${1:-}" in
15 "")
16 break
17 ;;
18 -d | --debug)
19 set -x
20 DEBUG=1
21 shift
22 ;;
23 -m | --markdown)
24 MARKDOWN=1
25 HOST_OS=1
26 SANDBOX=1
27 shift
28 ;;
29 --host-os)
30 HOST_OS=1
31 shift
32 ;;
33 --sandbox)
34 SANDBOX=1
35 shift
36 ;;
37
38 * )
39 cat <<EOF
40nix-info - get high level info to help with debugging
41
42Options:
43
44 -m, --markdown formatting for a GitHub issue
45 implies: --host-os, --sandbox
46
47 --sandbox include sandbox configuration
48 --host-os include host OS details
49
50 -h, --help show this message
51 -d, --debug debug mode
52
53EOF
54 case "${1:-}" in
55 -h|--help)
56 exit 0
57 ;;
58 *)
59 exit 1
60 ;;
61 esac
62 esac
63done
64
65debuglog() {
66 if [ $DEBUG -eq 1 ]; then
67 cat >&2
68 else
69 cat > /dev/null
70 fi
71}
72
73nixev() {
74 nix-instantiate --eval --strict -E "$1"
75}
76
77desc_system() {
78 nixev 'builtins.currentSystem'
79}
80
81desc_host_os() {
82 printf "%s" "$(uname -sr)"
83
84 if [ "$IS_DARWIN" = "yes" ]; then
85 printf ", macOS %s" "$(sw_vers -productVersion)"
86 fi
87
88 if [ -f /etc/os-release ]; then
89 (
90 # shellcheck disable=SC1091
91 . /etc/os-release
92 printf ", %s, %s, %s" "${NAME:-$(uname -v)}" "${VERSION:-noversion}" "${BUILD_ID:-nobuild}"
93 )
94 fi
95}
96
97desc_multi_user() {
98 if nix-build --no-out-link @multiusertest@ 2>&1 | debuglog; then
99 printf "yes"
100 else
101 printf "no"
102 fi
103}
104
105desc_nixpkgs_path() {
106 nixev '<nixpkgs>' 2>/dev/null || echo "not found"
107}
108
109channel_facts() {
110 find /nix/var/nix/profiles/per-user \
111 -mindepth 2 \
112 -maxdepth 2 \
113 -name channels \
114 -print0 \
115 |\
116 while IFS= read -r -d '' userchannelset; do
117 manifest="$userchannelset/manifest.nix"
118
119 if [ -e "$manifest" ]; then
120 userchannels=$(nixev \
121 "builtins.concatStringsSep \", \"
122 (map (ch: ch.name)
123 (import \"$manifest\"))")
124
125 fact "channels($(echo "$manifest" | cut -d/ -f7))" \
126 "$userchannels"
127 fi
128 done
129}
130
131desc_sandbox() {
132 if nix-build --no-out-link @sandboxtest@ 2>&1 | debuglog; then
133 printf "no"
134 elif nix-build --no-out-link @relaxedsandboxtest@ 2>&1 | debuglog; then
135 printf "relaxed"
136 else
137 printf "yes"
138 fi
139}
140
141fact() {
142 name="${1:-0}"
143 value="${2:-0}"
144 last="${3:-1}"
145 if [ $MARKDOWN -eq 0 ]; then
146 printf "%s: %s" "$name" "$value"
147 if [ "$last" -eq 1 ]; then
148 printf ", "
149 fi
150 else
151 printf " - %s: \`%s\`\\n" "$name" "$value"
152 fi
153
154 if [ "$last" -eq 0 ]; then
155 echo ""
156 fi
157}
158
159last_fact() {
160 fact "$1" "$2" 0
161}
162
163fact "system" "$(desc_system)"
164if [ $HOST_OS -eq 1 ]; then
165 fact "host os" "$(desc_host_os)"
166fi
167fact "multi-user?" "$(desc_multi_user)"
168if [ $SANDBOX -eq 1 ]; then
169 fact "sandbox" "$(desc_sandbox)"
170fi
171
172fact "version" "$(nix-env --version)"
173channel_facts
174last_fact "nixpkgs" "$(desc_nixpkgs_path)"